ceilings
A ceiling is the horizontal surface that forms the top part or roof inside a room.
The rooms were spacious, with tall windows and high ceilings.
房间很宽敞,且窗户和屋顶都很高。
A ceiling on something such as prices or wages is an official upper limit that cannot be broken.
an informal agreement to put a ceiling on salaries.
一项规定工资上限的非正式协议。