宇航员在进入太空前要接受多年的训练。

An ___astronaut undergoes years of training before going into space.

这位宇航员在太空中度过了六个月的时间。

The ___astronaut spent six months in space.

这位宇航员在国际空间站工作了六个月。

The ___astronaut worked on the International Space Station for six months.