Meanwhile, as all this is going on, Hal and Dave, the human astronaut, are talking to each other.

与此同时,一切都在进行中,哈尔和那个叫戴夫的人类宇航员交谈

耶鲁公开课 - 死亡课程节选

For example, in outer space, you've got an astronaut.

比如在外太空,假如你是宇航员

耶鲁公开课 - 基础物理课程节选