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knuckle
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音标：英 ['nʌk(ə)l] 美 ['nʌkl]
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解释：
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n. 关节；指关节；指节；膝关节；肘
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vi. 开始认真工作
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vt. 用指关节敲打
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助记提示：
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1. knock => knuckle.
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2. 我们敲门的时候不正是使用的是指关节去敲门的吗？
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中文词源：
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knuckle 指节来自Proto-Germanic*knuk,骨头，-le,小词后缀。引申词义指节，铜指手套（一种过去的武器）。
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英文词源：
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knuckle
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knuckle: [14] Knuckle originally denoted the rounded end of a bone at a joint, which sticks out when you bend the joint. This could be at any joint, including the elbow, the knee and even the joints of the vertebrae; only gradually did it become specialized to the finger joints. The word probably came from Middle Low German knökel (or a relative of it), which appears to have meant etymologically ‘little bone’. Knuckle down, in the sense ‘begin to work hard and conscientiously’, comes from the game of marbles, where players have to put their knuckles on the ground when shooting a marble with the thumb.
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knuckle (n.)
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mid-14c., knokel "finger joint; any joint of the body, especially a knobby one; morbid lump or swelling;" common Germanic (cognates: Middle Low German knökel, Middle Dutch cnockel, German knöchel), literally "little bone," a diminutive of Proto-Germanic root *knuk- "bone" (compare German Knochen "bone).
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As a verb from 1740, originally in the game of marbles. To knuckle down "apply oneself earnestly" is 1864 in American English, extended from marbles (putting a knuckle on the ground in assuming the hand position preliminary to shooting); to knuckle under "submit, give in" is first recorded 1740, supposedly from the former more general sense of "knuckle" and here meaning "knee," hence "to kneel." The face-busting knuckle-duster is from 1858 (a duster was a type of protective coat worn by workmen).
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双语例句：
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1. The United States, he said, did not knuckle under to demands.
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他说，美国不会屈从于他人的要求。
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来自柯林斯例句
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2. David Seaman was back in the Arsenal goal after breaking a knuckle.
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戴维·西曼在一个指关节骨折后又回到阿森纳队的球门前。
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来自柯林斯例句
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3. It is arguable whether the rebels will knuckle under.
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还不能确定反叛者是否会投降。
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来自柯林斯例句
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4. The only thing to do was knuckle down and get on with some serious hard work.
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唯一能做的就是开始努力工作，好好干出点儿成绩来。
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来自柯林斯例句
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5. He managed to knuckle down to his lessons long enough to pass his examination.
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他在离考试还有足够长时间的时候就开始认真学习，从而通过了考试。
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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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I'm going to have to knuckle down to some serious study.
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我得开始认认真真地学习了。【牛津词典】
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Brenda's knuckles were white as she gripped the arms of the chair.
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布伦达握紧椅子扶手时指关节都变白了。【柯林斯高阶英语词典】
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Stirrup wheel knuckle support assembly using caliper brakes.
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斯蒂勒普轮蹄支持装配使用刹车卡钳.【期刊摘选】
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Tom did not knuckle down under the attacks.
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面对这些攻击,汤姆并没有屈服.【期刊摘选】
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If you want to pass that exam, you'll have to knuckle down ( to some hard work ).
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你要想考试及格, 就得开始下功夫 ( 苦干 ) 了.【期刊摘选】
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Install the brake rotor shield to the knuckle.
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向转向节上安装煞车分火头护罩.【期刊摘选】
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The Chinese people will not knuckle under in any circumstances.
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中国人民在任何情况下都不会屈服.【期刊摘选】
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We don't want anything near the knuckle, lad. There'll be ladies present.
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小伙子,我们不想听任何粗俗的笑话. 这里在座的女士们.【期刊摘选】
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Make a slit near the knuckle and place the garlic into the slit.
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切开裂口在羊腿的关节位置上,将蒜头塞进里面.【期刊摘选】
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You'll really have to knuckle down if you want to pass the examination.
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如果想通过考试,你确实应专心学习.【辞典例句】
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Some of his jokes are a bit too near the knuckle for my taste.
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我觉得他有的笑话已近乎淫亵了.【期刊摘选】
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Steering axis inclination is the inward tilt of the steering knuckle at the top.
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转向轴倾角是向内倾斜的转向关节在顶部.【期刊摘选】
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That joke of his was a bit near the knuckle, don't you think?
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你不觉得他讲的那个笑话有点下流 吗 ?【期刊摘选】
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He served a braised knuckle of lamb for the main course.
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他端上了一盘炖熟的羊膝作为主菜.【期刊摘选】
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Grind all uneven surfaces until the actuator cam barrel extends flush with the knuckle face plate.
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磨磨凹凸不平,需要执行器凸轮每桶凹凸不平,直到与关节冲洗扩展面板.【期刊摘选】
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Key of C, has hand knuckle rest and Right hand thumb rest.
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碳键, 任何信息的左手指关节及右手拇指休息休息.【期刊摘选】
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Slote gnawed on a knuckle.
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斯洛特咬住一下指关节.【辞典例句】
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Would you like a knuckle sandwich?
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揍你一顿 怎么样 ?【期刊摘选】
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Practice: Peanut? Wash knuckle Add Remove the same time, by adding soy sauce? Sugar? liquor.
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做法: 花生? 猪脚洗净同时放入锅中, 加入酱油? 糖? 酒.【期刊摘选】
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If you want to pass that exam, you'll have to knuckle down.
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你要想考试及格, 就得开始下功夫了.【期刊摘选】
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The results show that the thermomechanical treatment can improve the quality of the automobile steering knuckle.
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结果表明,锻造余热淬火工艺对汽车转向节质量有明显改善.【期刊摘选】
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In automobile part, knuckle as functional component is ery complex shape and required high strength.
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汽车中的功能零件, 如挂钩、肘接头等,形状复杂并且要求高强度.【期刊摘选】
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The only thing to do was knuckle down and get on with some serious hard work.
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唯一能做的就是开始努力工作，好好干出点儿成绩来。【柯林斯例句】
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The United States, he said, did not knuckle under to demands.
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他说，美国不会屈从于他人的要求。【柯林斯例句】
83、
He managed to knuckle down to his lessons long enough to pass his examination.
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他在离考试还有足够长时间的时候就开始认真学习，从而通过了考试。【柯林斯例句】
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David Seaman was back in the Arsenal goal after breaking a knuckle.
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戴维·西曼在一个指关节骨折后又回到阿森纳队的球门前。【柯林斯例句】
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It is arguable whether the rebels will knuckle under.
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还不能确定反叛者是否会投降。【柯林斯例句】
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