lavatory

/ˈlævəˌtɔri/

a room or building equipped with one or more toilets

Chinese meaning: 厕所；洗手间

The lavatory on the train was out of order, causing inconvenience to passengers.

火车上的厕所坏了，给乘客带来了不便。

Please ensure the lavatory is clean after use for the next person.

请在使用后确保厕所干净，以便下一个人使用。