跳下; 开始行动，发起进攻

1. 开始,开始进攻：jump at 急忙接受,立即抓住 | jump off 开始,开始进攻 | just about 差不多,几乎

2. 跳离：turn off 关 | jump off 跳离 | take off 脱(衣),(飞机)起飞

3. 开始：jump in 投入 | jump off 开始 | jump on 扑向

4. 跳下来：499. jump into 跳进 | 500. jump off 跳下来 | 501. jump out of 跳出来

verb

1. set off quickly, usually with success

e.g. The freshman jumped off to a good start in his math class

2. jump down from an elevated point

e.g. the parachutist didn't want to jump
every year, hundreds of people jump off the Golden Gate bridge
the widow leapt into the funeral pyre

Synonym: jumpleap