单词 | Lower Carboniferous period |
释义 | Lower Carboniferous period (extremely rare) n WORD FAMILY Lower Carboniferous period USAGE EXAMPLESWhen they re-emerge, in what is called the Lower Carboniferous period, they do, indeed, live up to their potential. Economist(Dec 08, 2016) n from 345 million to 310 million years ago; increase of land areas; primitive ammonites; winged insects Syn|Exp Lower Carboniferous, Missippian period, Mississippian geological period, period a unit of geological time during which a system of rocks formed |
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