土卫五上有氧气，其他星球呢？不要屏住呼吸哦。

There's oxygen on Rhea, but aliens? Don't hold your breath.

youdao

土卫五上有氧气，其他星球呢？不要屏住呼吸哦。

There's oxygen on Rhea, but aliens? Don't hold your breath.

youdao