| 单词 | mantle rock |
| 释义 | mantle rock in American English regolith : sometimes written ˈmantleˌrock nounmantle rock in American Englishnoun Physical Geography the layer of disintegrated and decomposed rock fragments, including soil, just above the solid rock of the earth's crust; regolith Word origin [1890–95]This word is first recorded in the period 1890–95. Other words that entered Englishat around the same time include: historicism, honky-tonk, phoneme, plein-air, wireless |
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