音标：['ʌndә,leiә(r)] ；

n. 下层, 底层,衬层

n. One who, or that which, underlays or is underlaid; a
lower layer.
n. A perpendicular shaft sunk to cut the lode at any
required depth.

词型变化：名词复数形式 : underlayers

词性分布：

名词100%

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