cei·ling /ˈsiːlɪŋ/ ●●● S3 W3 noun [countableC] → sealing1 TBBthe inner surface of the top part of a room 天花板 → roof rooms with high ceilings 天花板很高的房间
a light hanging from the ceiling 吊在天花板上的灯
2 LIMITthe largest number or amount of something that is officially allowed 上限,最高限度ceiling of a public spending ceiling of £240 billion 上限为2,400亿英镑的公共开支
impose/set/put a ceiling (on something) The government imposed a ceiling on imports of foreign cars. 政府对进口外国汽车的数量设了上限。
raise/lower the ceiling (on something) 提高/下调(某事物的)上限
→ glass ceiling