When astronauts go on spacewalks, they wear spacesuits to keep themselves safe.

当宇航员在太空行走时，会穿太空服以保证自己的安全。

youdao

There is no air on the moon. People wear spacesuits and carry their own air.

月球上没有空气。人们穿着太空服， 自己携带空气。

youdao

They can survive only as long as they wear spacesuits. because 95 per cent of the atmosphere is carbon dioxide.

他们只有穿着宇航服才能生存下来。因为大气层95%的成分是二氧化碳。

youdao