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单词 coccolith
释义 coccolith
 —coccolithic,  adj.  
 /kok"euh lith'/,  n.  
 a microscopic calcareous disk or ring making up part of the covering of certain marine plankton and forming much of the content of chalk rocks.
 [1865-70; < NL Coccolithus orig. a genus name; see COCCUS, -O-, -LITH]
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更新时间:2024/11/11 9:38:11