| 释义 |
substratum/sʌbˈstrɑ:təm, -ˈstreitəm/n. (pl. substrata /-tə/) 1 an underlying layer or substance 下层，底层 2 a layer of rock or soil beneath the surface 底层岩石；底土层，心土 3 a foundation or basis 基础；根据 there is a substratum of truth in it 这里面有事实根据 [modern Latin, past part. of Latin substernere (as SUB-, sternere ‘strew’): cf. STRATUM] |