1、绝灭[词典]dieout;
2、[例句]先前曾占主位的恐龙以及许多其他爬行动物到了这时都绝灭了。Thedinosaursandnumerousotherreptileswhichhadpreviouslybeendominantwereextinct.
3、化石与现存类型之间的这种依赖关系在我们研究绝灭类群时是十分明显的。Thisdependencybetweenfossilandlivingtypesiswellillustratedwhenwedealwithextinctgroups.
4、于是，这种鹿便在中国绝灭了。SothedeerperishedinChina.
