astronaut

Neil Armstrong was a famous astronaut who first walked on the lunar surface.

(Chinese) 尼尔·阿姆斯特朗是首位在月球表面行走的著名宇航员。

The astronaut trained in a zero-gravity tank to prepare for the mission.

(Chinese) 为了给任务做准备，这名宇航员在零重力水箱中进行了训练。