层 céng HSK2 floor (of a building) Origin Definitions Defs Strokes Stroke Words Sentences Sents Showing: sheaf All meanings 67 céng 67 classifier 50floor 15pile up 1sheaf 1 1 sentence for 层 (céng — sheaf) 层论是代数几何的重要基础。 céng lùn shì dàishù jǐhé de zhòngyào jīchǔ. Sheaf theory is an important foundation of algebraic geometry. Source: Dong Chinese Dictionary