"Jump" 这个词有多个含义和用法，以下是所有的含义和用法，以及词组搭配。

1. 跳跃：指人或物体从一处跳到另一处。例句：He jumps over the fence.他跳过围墙。

2. 跳过：指忽视或跳过某个过程或环节。例句：We jumped the subject and started talking about movies.我们跳过了那个话题，开始谈论电影。

3. 跃升：指职位、地位或水平的突然提高。例句：His career jumped after he won the competition.在赢得比赛后，他的事业得到了提升。

4. 跳伞：指从高空跳下，借助降落伞着陆。例句：He has always wanted to try sky diving, but he hasn't jumped yet.他一直想尝试跳伞，但还没跳过。

5. 突然改变：指突然改变态度、观点或行为。例句：She jumped from being a vegetarian to becoming a vegan.她从素食主义者突然变成了纯素食主义者。

固定搭配词组：

1. jump at something：急于接受或抓住某个机会。例句：He jumped at the opportunity to work abroad.他急于接受在国外工作的机会。

2. jump to conclusions：急于做出结论，不等充分了解事实。例句：Don't jump to conclusions before you have all the facts.在了解所有事实之前，不要急于下结论。

3. jump ship：离开原来的职位或组织，加入另一个职位或组织。例句：The manager decided to jump ship and join a smaller company.经理决定离开原来的公司，加入一家小公司。

4. jump start：指迅速开始或加速某个过程。例句：The government is trying to jump-start the economy with new policies.政府正试图通过新政策迅速刺激经济。

5. jump through hoops：指为了达到某个目的而不得不做一系列繁琐或不愉快的事情。例句：She had to jump through hoops to get her visa approved.她为了让签证获批，不得不做了一系列繁琐的事情。

6. jump in：指突然参与某个活动或讨论。例句：He jumped in the conversation to express his opinion.他突然加入谈话，表达自己的观点。

7. jump back：指因惊讶、恐惧或紧张而突然向后退缩。例句：She jumped back when she saw the unexpected guest.当她看到不速之客时，突然向后退缩。

8. jump forward：指突然提前或加速某个过程。例句：The company jumped forward in the industry after launching the innovative product.在推出创新产品后，该公司在行业内取得了领先地位。