n.[C]

1. 天花板；顶篷
   The new houses in this locality have very high ceilings.

   这个地区的新房子天花板甚高。

2. （价格、工资等）最高限度；最大限额
   A new ceiling has recently been fixed on pay.

   最近对工资规定了新的最高限额。

3. 【空】绝对升限
4. 【气】云幂高度

n.

1. the upper interior surface of a room.
2. an upper limit set on prices, wages, etc.
3. the maximum altitude that an aircraft can reach.
   ▸the altitude of the base of a cloud layer.
4. the inside planking of a ship's bottom and sides.