| 单词 | rock crust |
| 释义 | > as lemmasrock crust rock crust n. ΚΠ 1846 Minutes Proc. Inst. Civil Engineers 5 320 A thin bed of a calcareous rock crust, about 3 inches thick, was cut through for a length of about 100 feet. 1888 Atchison (Kansas) Daily Champion 19 Oct. 5/3 The stones..upheaved in strata through crevices in the rock crust of the earth. 1987 Science 8 May 704/3 Between episodes of loss of rock crust and ensuing new growth, the community persists for long enough for a new siliceous rock crust to be formed on the surface. < as lemmas |
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