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speed
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音标：英 [spiːd] 美 [spid]
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解释：
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vi. 超速，加速；加速，迅速前行；兴隆
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n. 速度，速率；迅速，快速；昌盛，繁荣
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vt. 加快…的速度；使成功，使繁荣
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n. (Speed)人名；(英)斯皮德
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中文词源：
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speed 繁荣，兴旺，速度，迅速，快速来自古英语 sped,繁荣，兴旺，来自 Proto-Germanic*spodiz,繁荣，兴旺，来自 PIE*spe,繁荣， 兴旺，词源同 prosper,desperate.后引申比喻义速度，迅速，快速，且成为主要词义，原词义 逐渐不再使用。
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英文词源：
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speed
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speed: [OE] Speed originally meant ‘success, prosperity’ – and when you wish someone Godspeed, you are wishing them ‘good fortune’. Largely, though, it is the secondary sense ‘quickness’, which first emerged in the late Old English period, that has survived to the present day. It has a surviving Germanic relative in Dutch spoed ‘quickness’, and it also has possible links with Old Church Slavonic speti ‘succeed’. It was first used as a slang term for ‘amphetamine’ in the mid 1960s.
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speed (n.)
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Old English sped "success, a successful course; prosperity, riches, wealth; luck; opportunity, advancement," from Proto-Germanic *spodiz (cognates: Old Saxon spod "success," Dutch spoed "haste, speed," Old High German spuot "success," Old Saxon spodian "to cause to succeed," Middle Dutch spoeden, Old High German spuoten "to haste"), from PIE *spo-ti-, from root *spe- (1) "to thrive, prosper" (cognates: Sanskrit sphayate "increases," Latin sperare "to hope," Old Church Slavonic spechu "endeavor," Lithuanian speju "to have leisure").
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Meaning "rapidity of movement, quickness, swiftness" emerged in late Old English (at first usually adverbially, in dative plural, as in spedum feran). Meaning "rate of motion or progress" (whether fast or slow) is from c. 1200. Meaning "gear of a machine" is attested from 1866. Meaning "methamphetamine, or a related drug," first attested 1967, from its effect on users.
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Speed limit is from 1879 (originally of locomotives); speed-trap is from 1908. Speed bump is 1975; figurative sense is 1990s. Full speed is recorded from late 14c. Speed reading first attested 1965. Speedball "mix of cocaine and morphine or heroin" is recorded from 1909.
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speed (v.)
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Old English spedan (intransitive) "to succeed, prosper, grow rich, advance," from the stem of speed (n.). Compare Old Saxon spodian, Middle Dutch spoeden "hasten," Old High German spuoton "to succeed, prosper," German sputen "make haste, hurry." Meaning "to go hastily from place to place, move rapidly" is attested from c. 1200. Transitive meaning "cause to advance toward success" is from mid-13c.; that of "send forth with quickness, give a high speed to" is first recorded 1560s; that of "to increase the work rate of" (usually with up) is from 1856. Meaning "drive an automobile too fast" is from 1908. Related: Speeded; sped; speeding.
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双语例句：
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1. He pushed everyone full speed ahead until production hit a bottleneck.
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他催促所有人拼命干活，直到生产遭遇瓶颈。
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来自柯林斯例句
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2. The camera combines rugged reliability with unequalled optical performance and speed.
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这款相机既坚固耐用，又有超凡的光学性能和快门速度。
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来自柯林斯例句
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3. It all started so promisingly when Speed scored a tremendous first goal.
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比赛开始的时候形势大好，斯皮德以一记精彩的进球拔得头筹。
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来自柯林斯例句
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4. The train's average speed was no better than that of our bicycles.
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火车的平均速度比我们骑自行车的速度快不了多少。
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来自柯林斯例句
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5. The vehicles have a top speed of 80 kilometres per hour.
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这些车辆最高时速为80公里。
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来自柯林斯例句
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更多相关例句：
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He reduced speed and turned sharp left.
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他减慢速度，向左急转。【牛津词典】
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The train began to pick up speed (= go faster) .
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火车开始加速。【牛津词典】
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The car was gathering speed .
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汽车逐渐加速。【牛津词典】
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a speed of 50 mph/80 kph
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每小时50英里 / 80公里的速度【牛津词典】
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at high/low/full/top speed
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以高 / 低 / 全 / 最高速【牛津词典】
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at breakneck speed (= fast in a way that is dangerous)
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以不要命的速度【牛津词典】
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travelling at the speed of light/sound
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以光速 / 音速行进【牛津词典】
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the processing speed of the computer
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计算机的处理速度【牛津词典】
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This course is designed so that students can progress at their own speed.
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这门课的设计思路是让学生自己掌握进度。【牛津词典】
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We aim to increase the speed of delivery (= how quickly goods are sent) .
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我们力争提高送货速度。【牛津词典】
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The accident was due to excessive speed.
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事故的原因在于速度过快。【牛津词典】
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She was overtaken by the speed of events (= things happened more quickly than she expected) .
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事态发展迅速为她始料所不及。【牛津词典】
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(formal)A car flashed past them at speed (= fast) .
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一辆汽车从他们身边疾驰而过。【牛津词典】
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shutter speeds
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快门速度【牛津词典】
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a four-speed gearbox
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有四挡的变速箱【牛津词典】
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a ten-speed mountain bike
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十速山地自行车【牛津词典】
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the cost of bringing the chosen schools up to speed
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使选定的学校达标所需的费用【牛津词典】
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He drove off at high speed...
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他驱车飞驰而去。【柯林斯高阶英语词典】
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With this type of camera, the shutter speed is fixed...
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对这类相机而言，快门的速度是固定的。【柯林斯高阶英语词典】
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In the late 1850s the speed of technological change quickened...
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19 世纪 50 年代末期，技术变革的速度加快了。【柯林斯高阶英语词典】
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Each learner can proceed at his own speed.
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每一位学习者都可以按自己的进度学习。【柯林斯高阶英语词典】
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Speed is the essential ingredient of all athletics...
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速度是所有田径运动项目的关键要素。【柯林斯高阶英语词典】
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He put on a burst of speed...
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他突然加速了。【柯林斯高阶英语词典】
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I was amazed at his speed of working.
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他办事之麻利让我深感叹服。【柯林斯高阶英语词典】
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...the sheer speed of the unification process.
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统一进程速度惊人【柯林斯高阶英语词典】
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Trains will speed through the Channel Tunnel at 186mph...
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火车将以每小时 186 英里的速度快速穿过海峡隧道。【柯林斯高阶英语词典】
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The engine noise rises only slightly as I speed along.
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我一路高速行驶时，发动机的噪音只提高了一点点。【柯林斯高阶英语词典】
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This man was not qualified to drive and was speeding.
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这名男子没有驾驶资格，并且违章超速行驶。【柯林斯高阶英语词典】
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A day has been set aside to bring all councillors up to speed on the proposal...
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已经确定了一个日子，届时将向所有的市政委员汇报有关该建议的最新进展情况。【柯林斯高阶英语词典】
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Those in charge deluded themselves they were up to speed.
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那些负责人自以为掌握了最新情况。【柯林斯高阶英语词典】
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The study, which followed more than 2,000 healthy adults between the ages of 18 and 60, found that certain mental functions—including measures of abstract reasoning, mental speed and puzzle-solving—started to dull as early as age 27.【出自-2016年6月阅读原文】
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Steamships captured the North Atlantic passenger business from sail in the 1840s because of its much greater speed.【出自-2014年6月阅读原文】
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The high cost of steam and the lesser need for speed kept the majority of the world's ocean freight moving by sail until the early years of the 20th century【出自-2014年6月阅读原文】
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If you could move at the speed of light, your time would stand still.【出自-2011年6月听力原文】
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A search is now under way to confirm the suspected existence of particles of matter that move at a speed greater than light, and therefore, might serve as our passports to the past【出自-2011年6月听力原文】
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Earlier this morning, the office asked for the public's help to measure their speed results, saying consumers deserved to get the speeds they were promised.【2017年6月四级真题（第二套）阅读 Section A】
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Even when they stay on the right side of the law, Internet providers arouse customers' anger over bandwidth speed and cost.【2017年6月四级真题（第二套）阅读 Section A】
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If you've got a good car that can go at a high speed, then it's really nice to do that.【2016年6月四级真题（第二套）听力 Section B】
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Obviously, when driving through a residential area or where there's a school, you've got to have speed policemen.【2016年6月四级真题（第二套）听力 Section B】
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One early problem faced by Internet users was speed.【2017年12月四级真题（第三套）阅读 Section A】
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Or like speeding, it's very easy to put speed cameras in certain places.【2016年6月四级真题（第二套）听力 Section B】
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Speed, of course, is essential to the drive-through experience, and drive-throughs are hugely important to chains such as McDonald's, Burger king and Taco Bell.【2018年6月四级真题（第一套）听力 Section A】
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The team found that exerciser educed the speed of rapid eye movements by about 8%, preventing their ability to capture new visual information.【2017年6月四级真题（第三套）阅读 Section A】
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So a heavy object, like a football player moving at a high speed, has a lot of momentum — that is, once be is moving, it is hard to change his state of motion.【出自-2015年12月阅读原文】
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In the old days, we didn't much write like talking because there was no mechanism to reproduce the speed of conversation.【出自-2014年6月阅读原文】
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If the collapse of the rain forests speeds up dramatically,it could eventually release 3.5-5 billion metric tons of carbon into the atmosphere each year - making forests the leading source of greenhouse gases.【出自-2013年6月阅读原文】
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To increase the volume and the speed with which we move natural resources through the consumer economy to the junk pile or the waste heap.【出自-2013年12月听力原文】
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After repeating the question, she explained that the sufficient number of security guards would be working at peak hours to speed things along【出自-2012年12月听力原文】
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It's a complex system wherein data is copied to multiple intermediate devices, usually to speed up access to files when millions of people are trying to access the service at the same time.【出自-2010年12月听力原文】
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Civilian aviation is being disrupted, not by the age-old desires for speed, romanticism and glamour, but by the pressing need to respond to a changing climate.【2019年6月六级真题（第二套）阅读 Section A】
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Furthermore, they say, it is the best way for researchers to gather the range of observations that are necessary to speed up discoveries or to identify large-scale trends.【2017年12月六级真题（第二套）阅读 Section B】
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give the right computer a massive database of faces, and it can process what it sees—then recognize a face it's told to find—with remarkable speed and precision.【2018年6月六级真题（第一套）阅读 Section C】
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Manufacturers in America valued "speed to market" more than in other countries, the report found.【2015年12月六级真题（第二套）听力 Section C】
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Only a small fraction of the population was literate, but the production of books grew at an extraordinary speed.【2017年12月六级真题（第一套）听力 Section B】
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Protein can give them the edge they need to speed that process.【2019年12月六级真题（第二套）阅读 Section B】
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Protein can speed the repairing of damaged muscles.【2019年12月六级真题（第二套）阅读 Section B】
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So a heavy object, like a football player moving at a high speed, has a lot of momentum — that is, once he is moving, it is hard to change his state of motion.【2015年12月六级真题（第一套）阅读 Section B】
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These fears are mostly exaggerated: as with hysteria about genetic modification, we humans are generally wise enough to manage these problems with speed and care.【2018年6月六级真题（第三套）阅读 Section A】
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They scanned the brains of teens and adults who were playing a virtual driving game designed to test whether players would brake at a yellow light or speed on through the crossroad.【2018年6月六级真题(第二套)阅读 Section B】
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A sudden stop can be a very frightening experience, especially if you are travelling at high speed.【2016年高考英语浙江卷（6月） 单项选择 原文】
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Animals are built of many different materials----skin, fat, and more----and light moves throu】
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