层[céng] 基本解释：
新英汉大词典：
- 层(層)[céng]
- 量词- （用于重叠、积累的东西，如楼层、阶层、地层） storey; tier; stratum:
a five-storey building;五层大楼
the lowest [highest] tier of society社会的最低[上]层
- （用于可以分项分步的东西） a component part in a sequence; level:What he said has further implications.他这话还有一层意思。
- （用于可以从物体表面揭开或抹去的东西）layer:a thin sheet [layer] of ice;一层薄冰
a coat of paint一层油漆
- 形 副- （重叠） layer upon layer; multiple
以上内容来源于：《新汉英大辞典》
例句与用法：
The floor has been cemented over.
I took the elevator to the eighteenth floor.
My new house is on the sixteenth floor.
The upstairs rooms are much warmer than those on the ground floor.
That is a house of six stories.
There are several layers of meaning.
The pollution had destroyed ozone layer and caused many changes in weather.
I live on the top floor.
层的其他解释: