[N-COUNT 可数名词]屋顶；天花板 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，窗户和天花板都很高。
The study was lined from floor to ceiling on every wall with bookcases.
书房的四面墙都摆满了书架，从地板一直到天花板。
2
[N-COUNT 可数名词](官方定的价格、工资等的)上限，最高限额 A ceiling on something such as prices or wages is an official upper limit that cannot be broken.
[oft N of n]
...an informal agreement to put a ceiling on salaries...
对工资封顶的非正式协议
The agreement sets the ceiling of twenty-two-point-five million barrels a day on OPEC production.
协议规定，欧佩克每天的原油产量不得超过22,500,000桶。
3
[N-COUNT 可数名词]最高飞行限度；升限 A ceiling is the greatest height at which a particular aircraft can fly safely.
[TECHNICAL 术语]
Oxford
ceil·ing★/ˈsiːlɪŋ; NAmEˈsiːlɪŋ/noun1★the top inside surface of a room 天花板；顶棚◆She lay on her back staring up at the ceiling.她仰卧着凝视天花板。◆a large room with a high ceiling屋顶很高的大房间2the highest limit or amount of sth 最高限度；上限；最大限量◆price ceilings最高价☞compare
floor
n. (7 )3( technical 术语) the greatest height at which a particular aircraft is able to fly 最高飞行限度；升限☞see also
1the inner surface of the top part of a room → roof: rooms with high ceilings a light hanging from the ceiling2the largest number or amount of something that is officially allowedceiling of a public spending ceiling of £240 billionimpose/set/put a ceiling (on something) The government imposed a ceiling on imports of foreign cars.raise/lower the ceiling (on something)3 technical the greatest height an aircraft can fly at or the level of the clouds →
glass ceiling
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