He discussed the subject with explorers and extreme sports athletes.

VOA: special.2010.02.24

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