Read Edit View history 大绝灭 dàjuémiè mass extinction Origin Definitions Defs Strokes Stroke Words Sentences Sents Senses Add sense 大绝灭/ 大絕滅 dàjuémiè mass extinction 科学家们正在研究白垩纪末期的大绝灭事件。 Edit Delete References Add reference No references for this word.