An opaque white soft earthy limestone, which exists in deposits of vast extent and thickness in the south-east of England, and forms high cliffs…
单词 | θ5609 |
释义 | the world > the earth > structure of the earth > constituent materials > rock > sedimentary rock > [noun] > chalk (8) chalk956 An opaque white soft earthy limestone, which exists in deposits of vast extent and thickness in the south-east of England, and forms high cliffs… cray14.. Chalk. Subcategories:— quality (1) — hard chalk (1) — malm (3) — deposit or stratum (1) |
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