| 单词 | sedimentary rock | 
| 释义 | sedimentary rocknoun  : rock formed of mechanical, chemical, or organic sediment: such as    a     : clastic rock (as conglomerate, sandstone, or shale) formed of fragments of other rock transported from its source and deposited in water    b     : rock (as rock salt or gypsum) formed by precipitation from solution    c     : rock (as limestone) formed from secretions of organisms    | 
	
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