而如果你想在等飞机或者火车时睡一觉，那么你要面对很多安全和卫生方面的不懂的题目。

If you want to sleep while waiting for your plane or train, you face many security and hygiene problems.

youdao

而如果你想在等飞机或者火车时睡一觉，那么你要面对很多安全和卫生方面的不懂的题目。

If you want to sleep while waiting for your plane or train, you face many security and hygiene problems.

youdao