绝灭

So the deer perished in China.

于是，这种鹿便在中国绝灭了。

In doing so they were saved from extermination.

这样一来却使它们免于绝灭。

This dependency between fossil and living types is well illustrated when we deal with extinct groups.

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。

He had discovered that this noble family had died out and were forgotten.

他发现了这个高贵的家族已全部绝灭并且被人们所遗忘。

The Cretaceous extinction was like a terrible streak of bad luck lasting millions of years.

白垩纪的生物绝灭，犹如一场持续千百万年的可怕厄运。