基础释义
例句

福克斯词典 \ 英汉词典 \

extinctions是什么意思？

extinctions

n. [生物] 灭绝（extinction的复数），消失，废除；

例句

And the number of extinctions continues at a high rate in the twenty - first century. 灭绝物种的数量在二十一世纪仍在以很高的速率上涨.
Scientists then began searching the layers of rocks delineate mass extinctions. 科学家们开始研究详细记录了大规模灭绝事件的岩石层.

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