BBC英语口语:不满意就走人

Reserve: 预约,预定
They have reserved rooms at a hotel.
他们已预订了旅馆房间。
I have reserved a table at the restaurant.
我已在饭店预订了一桌菜。

Check in: (在旅馆、机场、大会等处)办理登记手续,报到,登记
He has just checked in at the hotel.
他刚刚在旅馆办好住宿手续。
We checked in at the airport an hour before our plane took off.
我们在飞机起飞前一小时到达机场办理登机手续。

Check out:  (从旅馆等)结账离开
They checked out ten minutes ago.
他们十分钟前就结账走了.