Substratum

[sʌb'strɑːtəm;-'streɪtəm] or ['sʌbstretəm]

解释:

(n.) That which is laid or spread under; that which underlies something, as a layer of earth lying under another; specifically (Agric.), the subsoil.

(n.) The permanent subject of qualities or cause of phenomena; substance.

伊万杰琳校对

同义词及近义词：

n. Principle, element, groundwork, underlying substance, fundamental or primordial substance.

伊莎贝拉录入

解释:

n. an under stratum or layer a fundamental element: the substance in which qualities exist.

编辑:帕梅拉