This can be anything from walking or running against the resistance of water, to doing jumping jacks in the water.

VOA: special.2010.06.08

We're getting further away from the nucleus because we're jumping, for example, from the n equals 2 to the n equals 3 shell, or from the n equals 3 to the n equals 4 shell.

我们将会离原子核越来越远,因为我们在跃迁，比如从，n，等于，2，的壳层到n等于，3，的壳层，或者从，n，等于，3，的壳层到n等于，4，的壳层。

麻省理工公开课 - 化学原理课程节选

Or maybe you could be wanting to try some extreme sports like skydiving, jumping out of an airplane.

又或者你想尝试一些极限运动，比如跳伞，直接从飞机上跳下来。

Have you 课堂 - SpeakingMax英语口语达人