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class
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音标：英 [klɑːs] 美 [klæs]
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解释：
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n. 阶级；班级；种类；班；等级
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vt. 分类；把…分等级；把…归入某等级，把…看作（或分类、归类）；把…编入某一班级
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adj. 极好的；很好的，优秀的，出色的
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vi. 属于…类（或等级），被列为某类（或某级）
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n. （英、德）克拉斯（人名）
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中文词源：
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class 班级，阶级来自PIE*kele,呼喊，呼叫，词源同call,claim.最早来自公元前6 世纪古罗马具有传奇色彩的 伟大首领Servius Tullius 对公民的财产，地位，收入等进行评估（参照census 词源），并依 据评估结果对公民划分社会阶级（classify），最终形成6 个阶级。前5 个阶级具有响应国家 军事号召参军入伍的资格，而最低等的阶级即马克思理论的无产阶级（参照proletarian 词源） 是不具有这种资格的，他们唯一的使命是为罗马帝国繁衍后代，在罗马帝国新占领的领土上 移民聚居。这一改革的结果废除了古罗马原有的3 个部落氏族（参照tribe 词源），使罗马 由氏族部落过渡到奴隶社会，军事实力大增。并引申诸多词义。
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英文词源：
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class
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class: [16] Latin classis originally denoted ‘the people of Rome under arms, the ancient Roman army’; it appears to come from an earlier unrecorded *qladtis, a derivative of the base *qel- ‘call’, which points to an underlying sense ‘call to arms’. Under the terms of the constitution attributed to Servius Tullius, a 6thcentury BC king of Rome, the army, and hence the people, was divided into six such classes, membership of each based originally on the amount of land held, and latterly on wealth in money terms.
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English first adopted the word in this antiquarian sense (which provided the basis for the modern application to social class), but its widespread use in the language probably began in the sense ‘group of pupils’. The derivatives classic [17] and classical [16] come from Latin classicus, probably via French classique; in Latin, the adjective signified ‘of the highest class of Roman citizen’, whence the word’s presentday approbatory connotations.
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class (n.)
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c. 1600, "group of students," from French classe (14c.), from Latin classis "a class, a division; army, fleet," especially "any one of the six orders into which Servius Tullius divided the Roman people for the purpose of taxation;" traditionally originally "the people of Rome under arms" (a sense attested in English from 1650s), and thus akin to calare "to call (to arms)," from PIE root *kele- (2) "to shout" (see claim (v.)). In early use in English also in Latin form classis.
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School and university sense of "course, lecture" (1650s) is from the notion of a form or lecture reserved to scholars who had attained a certain level. Natural history sense is from 1753. Meaning "a division of society according to status" (upper, lower, etc.) is from 1772. Meaning "high quality" is from 1847. Class-consciousness (1903) is from German klassenbewusst.
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class (v.)
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1705, "to divide into classes," from class (n.) or French classer. Sense of "to place into a class" is from 1776. Related: Classed; classing.
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双语例句：
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1. The price includes two economy class airfares from Brisbane to Los Angeles.
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这一价格包括两张从布里斯班到洛杉矶的经济舱机票。
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来自柯林斯例句
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2. There was very little snobbery or class-consciousness in the wartime navy.
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战时的海军中很少有势利眼，阶级意识也不强。
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来自柯林斯例句
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3. He was not perhaps physically the strongest in the class.
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他可能不是全班身体最壮的。
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来自柯林斯例句
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4. You can pay to be upgraded to a business class seat.
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你可以付费升级到商务舱。
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来自柯林斯例句
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5. He suggested a link between class size and test results of seven-year-olds.
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他认为7岁大的学生的测试分数和班级的规模有关系。
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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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We were in the same class at school.
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我们在上学时同过班。【牛津词典】
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She is the youngest in her class.
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她在班里年龄最小。【牛津词典】
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He came top of the class .
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他在全班名列前茅。【牛津词典】
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The whole class was/were told to stay behind after school.
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全班被告知放学后留下。【牛津词典】
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I was late for a class.
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我上课迟到了。【牛津词典】
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See me after class.
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下课后来见我。【牛津词典】
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She works hard in class (= during the class) .
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她在课堂上学习用功。【牛津词典】
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I have a history class at 9 o'clock.
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我9点钟有历史课。【牛津词典】
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I've been taking classes in pottery.
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我一直在上陶器制作技术课。【牛津词典】
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Are you still doing your French evening class?
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你还在夜校学习法语吗？【牛津词典】
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the class of 2002
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2002届毕业生【牛津词典】
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the working/middle/upper class
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工人 / 中产 / 上层阶级【牛津词典】
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The party tries to appeal to all classes of society.
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这个政党尽力吸引社会各阶层人士。【牛津词典】
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the professional classes
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专业阶层【牛津词典】
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differences of class, race or gender
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社会等级、种族或性别差异【牛津词典】
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He had to spend about six months in a class with younger students...
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他不得不和一群比他小的学生在一个班里上了约6个月的课。【柯林斯高阶英语词典】
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Reducing class sizes should be a top priority.
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削减班级规模应该是首选方案。【柯林斯高阶英语词典】
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He acquired a law degree by taking classes at night...
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他通过读夜校获得了法律学位。【柯林斯高阶英语词典】
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I go to dance classes here in New York.
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我在纽约上舞蹈课。【柯林斯高阶英语词典】
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There is lots of reading in class.
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课上要进行大量的阅读。【柯林斯高阶英语词典】
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These two members of Yale's Class of '57 never miss a reunion.
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这两个耶鲁大学57届毕业生每次同学聚会都参加。【柯林斯高阶英语词典】
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...the relationship between social classes...
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社会阶级关系【柯林斯高阶英语词典】
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What it will do is create a whole new ruling class.
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它的作用就是创造一个全新的统治阶级。【柯林斯高阶英语词典】
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Harbour staff noticed that measurements given for the same class of boats often varied.
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港口工作人员注意到，对同一类船舶的测量方法常常不一样。【柯林斯高阶英语词典】
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...the division of the stars into six classes of brightness.
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按照亮度将恒星分为6个等级【柯林斯高阶英语词典】
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Since the birds interbreed they cannot be classed as different species...
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由于这些鸟进行杂交繁殖，不能把它们归为不同的物种。【柯林斯高阶英语词典】
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I class myself as an ordinary working person...
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我把自己当作一个普通的上班族。【柯林斯高阶英语词典】
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He's got the same style off the pitch as he has on it — sheer class.
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他场上场下都是一个样——极具风度。【柯林斯高阶英语词典】
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Kite is undoubtedly a class player.
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凯特绝对是个一流选手。【柯林斯高阶英语词典】
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As a player, he was in a class of his own.
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作为运动员，他是独一无二的。【柯林斯高阶英语词典】
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Texas Tech University is even offering a class called Improving Your Sleep Habits.【出自-2016年6月听力原文】
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She primarily speaks to students in health classes, but sometimes the school will arrange for her to speak to several different groups of girls.【出自-2016年6月听力原文】
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Later, I developed a broader theory of what separates the two general classes of learners—helpless versus mastery-oriented.【出自-2016年12月阅读原文】
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In the growth mind-set classes, students read and discussed an article entitled You Can Grow Your Brain.【出自-2016年12月阅读原文】
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If we replaced half of our administrative staff with classroom teachers, we might actually get a majority of our classes back to 20 or fewer students per teacher.【出自-2016年12月阅读原文】
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Forty-eight of the students received instruction in study skills only, whereas the others attended a combination of study skills sessions and classes in which they learned about the growth mind-set and how to apply it to schoolwork.【出自-2016年12月阅读原文】
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There are plenty of recipes ( ' , 食谱 ), how-to videos and cooking classes available to anyone who has a computer, smartphone or television.【出自-2015年12月阅读原文】
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To his classmates and even to his teachers, he was thought of as the dumbest kid in the class,according to his own not so fond memories.【出自-2015年12月听力原文】
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A 20-year-old junior at Georgia Southern University told BuzzFeed News that she normally spends $500-600 on access codes for class.【2018年6月四级真题（第三套）阅读 Section B】
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According to recent studies, digital divide has been caused by three major 32 elements: class, sex, and generation .【2015年12月四级真题（第一套）阅读 Section A】
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All in all, the Olympic class ships were marvels of sea engineering, but they seemed cursed to suffer disastrous fates.【2018年6月四级真题（第一套）阅读 Section C】
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As I sat blocked and clueless for two solid days, I momentarily wondered if I couldn't just call an expert on the subject matter which I was tackling, or someone who took the class previously, to get me going.【2017年12月四级真题（第一套）阅读 Section B】
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Better yet, how about what one Hunter College professor reportedly did recently for her final exam. She encouraged the class not to stress or even study, promising that, "It is going to be a piece of cake."【2017年12月四级真题（第一套）阅读 Section B】
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But Goel and his team sourced the online discussion forum to find all 40,000 questions that had ever been asked since the class was launched.【2019年12月四级真题（第二套）阅读 Section C】
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Children of educated and upper-middle-class parents turn out to be far more curious, even at early ages, than children of working class and lower class families.【2017年12月四级真题（第二套）阅读 Section B】
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Companies soon discovered that work could be done at home and submitted online, so a whole new class of telecommuters began to earn a living from home offices unshaven and wearing pajamas (睡衣).【2017年12月四级真题（第三套）阅读 Section A】
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I offer a simple proposition in response: Many of our problems—class attendance, educational success, student happiness and well-being—might be improved by cutting down the bureaucratic mechanisms and meetings and instead hiring an army of good teachers.【2016年12月四级真题（第三套）阅读 Section C】
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In 2012, 125 students at Harvard were caught up in a scandal when it was discovered they had cheated on a take-home exam for a class entitled "Introduction To Congress".【2017年12月四级真题（第一套）阅读 Section B】
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In an all girls setting, girls are more likely to speak up frequently and make significant contributions to class than in a coeducational setting.【2019年12月四级真题（第一套）听力 Section C】
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In terms of class, digital divide exists among different types of workers and between the upper and middle classes and the lower class.【2015年12月四级真题（第一套）阅读 Section A】
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It might be they have to talk to other students in the class to help get an answer.【2019年6月四级真题（第三套）阅读 Section B】
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It seems to me that a compromise would be receiving the exam questions a day or two in advance, and then doing the actual test in class with the ticking clock overhead.【2017年12月四级真题（第一套）阅读 Section B】
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My mother had taught me to knit at 15, and I knitted in class throughout college and for a few years thereafter.【2017年12月四级真题（第三套）阅读 Section B】
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Professor Ashok Goel of Georgia Tech developed an artificially intelligent teaching assistant to help handle the enormous number of student questions in the online class, Knowledge-Based Artificial Intelligence.【2019年12月四级真题（第二套）阅读 Section C】
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Research has also shown that in coeducational settings, teachers are more likely to praise and give in-depth responses to boys' comments in clas】
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