1 [C] act of jumping 跳; 跃; 跳跃
*a parachute jump 跳伞
* a superb jump 出色的跳跃.
2 [C] obstacle to be jumped over （需跳过的）障碍
*The horse fell at the last jump. 那马在跳最後一个障碍时跌倒了.
* The water-jump is the most difficult part of the race. 跨跃水沟是赛马中最困难的一项.
3 [C] ~ (in sth) sudden rise in amount, price or value （数额、价格或价值的）突增, 突升, 暴涨
*The company's results show a huge jump in profits. 公司的结算显示利润大增.
4 [C]sudden change to a different condition or set of circumstances; leap （情况或环境的）突然改变, 飞跃
*the country's great jump forward to a new technological era 该国向新技术时代的大飞跃.
5 the jumps [pl](infml 口) state of extreme nervousness with uncontrollablemovements of the body （神经性）全身颤抖
*get/have the jumps 混身颤抖.
6 (idm 习语) be for the high jump => high jump (high1). get the jump on sb (infml 口) gain an advantage over sb 得到超越某人的优势. give sb a `jump (infml 口) shock or surprise sb so that he makes a sudden movement 吓某人一跳
*Oh, you did give me a jump! 啊, 你可真吓了我一跳! keep, etc one jump ahead (of sb) remain one stage ahead (of a rival) 保持领先于（对手的）地位. take a running jump => running.
1 [I, Ipr, Ip, In/pr] move quickly off the ground, etc, esp up into the air, by using the force of the legs and feet 跳; 跳起; 跃起
*to jump into the air, out of a window, over the wall, off a roof, onto the ground, etc 跳起来、跳出窗户、跳过墙、跳下屋顶、跳到地上
* The children were jumping up and down, eg because they were very excited. 孩子们兴奋得跳来跳去.
* She can jump 2.2 metres. 她能跳2.2米.
2 [Ipr, Ip] move quickly and suddenly 迅速而突然行动
*He jumped to his feet/jumped up (ie stood up quickly and suddenly) as the boss came in. 老板一进来他立刻站了起来.
* `Jump in (ie get in quickly),' he called from the car. ｀快上车,＇他在汽车里喊道.
3 [Tn] pass over (sth) by jumping; clear 跳过（某物）; 跃过
*The horses jumped all the fences. 马跳过了所有的篱笆.
4 [I] move suddenly with a jerk because of excitement, surprise, shock, etc; start （因兴奋、吃惊等）跳动, 惊跳
*The loud bang made me jump. 砰的一声巨响吓了我一跳.
* Her heart jumped when she heard the news. 她听到那消息心突突直跳. =>Usage 见所附用法.
5 [I, Ipr, Ip] (of a device) move suddenly and unexpectedly, esp out of its correct position （指机械）突然地, 意外地运动（尤指离开正常位置）
*a typewriter that jumps, ie omitting letters 跳字的（漏掉字母的）打字机
* The needle jumps on this record. 唱针在这张唱片上跳针.
6 [Ipr] ~ from sth to sth change suddenly from discussing one subject to another subject 突然改变话题
*I couldn't understand his lecture because he kept jumping from one topic to the next. 我听不懂他的演讲, 他总是从一项内容跳到另一项内容.
7 [Ipr, It, Tn] ~ from sth to sth pass over sth to a further point; omit or skip 跳过; 跃过; 隔过; 略过
*The film suddenly jumped from the events of
1920 to those of 1930. 那电影从1920年的事突然跳到1930年的事.
* jump several steps in an argument 在论证中跳过了几步.
8 [I, In/pr] ~ (by) sth rise suddenly by a very large amount 突升; 暴涨; 猛增
*Prices jumped (by) 60% last year. 物价去年暴涨60%.
9 [Tn] (infml 口) attack (sb) suddenly 突然攻击（某人）
*The gang jumped an old woman in the subway. 一伙歹徒在地下人行道突然袭击一老妇人.
10 [Tn] (infml 口 usu US) travel illegally on (a train) 违章搭乘（火车）
*jump a freight train 违章搭乘运货火车.
11 (idm 习语) climb/jump on the bandwagon => bandwagon (band). go (and) jump in the/a `lake (usu in the imperative 通常用于祈使句) (dated infml 旧, 口) go away 走开; 滚开. jump `bail fail to appear for a trial after being released on bail 弃保潜逃. jump down sb's `throat (infml 口) speak to sb in an angry, critical way 怒斥; 斥责. jump for `joy show one's delight at sth by excited movements 以兴奋的动作对某事表示高兴
*The children are jumping for joy at the thought of an extra day's holiday. 孩子们想到多一天假日, 高兴得直跳. jump the `gun
(a) start a race before the starting-gun has been fired 抢跑.
(b) do sth too soon, before the proper time 抢先做某事
*They jumped the gun by building the garage before permission had been given. 他们未得许可就抢先盖了汽车房. jump the `lights ignore and pass a red traffic-light 闯红灯. jump out of one's `skin be extremely surprised 非常吃惊; 大吃一惊
*The shock of seeing her again made me nearly jump out of my skin. 我又见到了她, 真让我大吃一惊. jump the `queue (Brit)
(a) go to the front of a queue of people without waiting for one's proper turn 未等轮到而抢先; 加塞儿.
(b) obtain sth unfairly without waiting for one's proper turn 未等轮到而提前获得某事物. jump the `rails/`track (of a train, etc) leave the rails suddenly （指火车等）出轨. jump `ship leave the ship on which one is serving, without having obtained permission 擅自离船弃职. jump to con`clusions come to a decision about sb/sth too quickly, before one has thought about all the facts （未经全面考虑）匆匆对某人[某事]作出结论
*I know I was standing near the till when you came back into the shop, but don't jump to conclusions. 我明白, 你回到商店时我确实是站在收款抽屉旁边, 但且不要忙着下结论. jump `to it (usu in the imperative 通常用于祈使句) (infml 口) hurry up 赶快
*The bus will be leaving in five minutes, so jump to it! 公共汽车还有五分钟就开了, 快点儿吧! wait for the cat to jump/to see which way the cat jumps => wait1.
12 (phr v) jump at sth seize (an opportunity, a chance, etc) eagerly 迫不及待地抓住（机会、机遇等）
*If they offered me a job in the USA, I'd jump at the chance. 假若他们给我一个职位在美国工作, 我一定赶紧抓住机会不放. jump on sb (infml 口) criticize or challenge sb sharply 严厉地批评或质问
*My maths teacher really used to jump on us when we got our answers wrong. 我们过去一算错答案, 数学老师就把我们狠训一顿.
NOTE ON USAGE 用法
*Leap and spring suggest a more energetic movement than jump. *leap和spring表示的动作比jump更加有力. Spring usually indicates a deliberate movement forward *spring通常指有意识的向前的动作
*The cat sprang forward and caught the mouse. 猫向前一跳, 捉住了老鼠. We can leap and jump in any direction *leap和jump可指向任何方向的动作
*jump/leap into the car, onto the platform, to one's feet, up the stairs 跳上汽车、跳到平台上、一跃而起、跳上台阶
* jump/leap up, down, forwards, back, etc 跳上、跳下、向前跳、向後跳. We also jump in surprise *jump也指吃惊时的动作
*The sudden noise made me jump. 突然一声响, 吓了我一跳. Bounce indicates repeated movement up and down, often while jumping on a springy surface *bounce指反覆的上下运动, 常指接触面有弹性
*bounce on a bed/trampoline. 在床[蹦床]上跳跃.