层

céng

HSK 3

层 — céng

1. a layer; stratum; tier

   这本书有好几层意思。 zhè běnshū yǒu hǎojǐcéng yìsi — This book has several layers of meaning.

2. to pile on top of one another; to layer (things)

   他把书一本一本地层放在桌上。 tā bǎ shū yīběn yīběn dìcéng fàngzài zhuōshàng — He stacked the books one by one on the table.

3. a floor or story of a building

   他住在三层。 tā zhù zài sāncéng — He lives on the third floor.

4. classifier for layers (e.g., 一层楼 yī céng lóu)

   这栋楼有十层。 zhèdòng lóu yǒu shícéng — This building has ten floors.

5. (mathematics) a sheaf; an algebraic/geometric layer (technical)

   在代数几何中常研究层的性质。 zài dàishù jǐhé zhōngcháng yánjiū céng de xìngzhì — In algebraic geometry one often studies properties of sheaves (layers).