层 — céng
to pile on top of one another; layer; stratum
to pile on top of one another; layer; stratum
层
层
层
层
层
to pile on top of one another; layer; stratum
层
层
层
层
层
to pile on top of one another; layer; stratum
层
层
层
层
层
to pile on top of one another; layer; stratum
层
层
层
层
层