← 词汇
下层
xià céng
underlayerlower classlower stratasubstrate
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汉字
下
below, underneath; inferior; to bring down; next
部首 一部件 ⿱一卜
层
layer, floor, story, stratum
部首 尸部件 ⿸尸云
below, underneath; inferior; to bring down; next
layer, floor, story, stratum