3 sentences

1. 航天员在太空停留多久？

   háng​tiān​yuán zài tài​kōng tíng​liú duō​jiǔ?

   How long do astronauts stay in space?

   Source: CCMatrix

2. 航天员睡哪里？

   háng​tiān​yuán shuì nǎ​li?

   Where do astronauts sleep?

   Source: CCMatrix

3. 要成为一位航天员，很不简单。

   yào chéng​wéi yī wèi háng​tiān​yuán, hěn bù​jiǎn​dān.

   Becoming an astronaut isn't easy.

   Source: CCMatrix