英['regəlɪθ] 美['regəˌlɪθ] 是什么意思 n. 风化层,土被;浮土; 英英释义 Regolith Regolith is a layer of loose, heterogeneous material covering solid rock. It includes dust, soil, broken rock, and other related materials and is present on Earth, the Moon, Mars, some astero...