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TOEFL BNC: 2874 COCA: 2641
ceiling
noun [C] /ˈsiːlɪŋ/
singularceiling
pluralceilings
  1. 1
    the surface that is above you in a room 天花板;顶棚
     Synonyms and related words
    Other parts of buildings: addition, alcove, balcony...
  2. 2
    an upper limit set on the number or amount of something 上限

    They imposed a ceiling on agricultural imports. 他们为农产品的进口规定了上限。

    A ceiling of £100 was put on all donations. 所有捐款的上限规定为100英镑。

     Synonyms and related words
    Limits, controls and ranges: red line, limit, constraint...
  3. 3
    the greatest height at which an aircraft can fly and be safe 最高飞行限度;上升限度
     Synonyms and related words
    Relating to operating aircraft: aerobatics, aerospace, airborne...
  4. 4
    the distance from the surface of the Earth to the lowest clouds 云幕高度(低层云与地面的距离)
     Synonyms and related words
    The Earth's atmosphere: aerospace, the air, atmosphere...
See also

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