Geology. A deposit or stratum composed mainly of chalk; frequently used to denote a particular stratum or system of such composition (usually with…
| 单词 | θ5613 |
| 释义 | the world > the earth > structure of the earth > constituent materials > rock > sedimentary rock > [noun] > chalk > deposit or stratum (1) chalk1811 Geology. A deposit or stratum composed mainly of chalk; frequently used to denote a particular stratum or system of such composition (usually with… |
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