One that exterminates, especially one whose occupation is the extermination of vermin.

扑灭者，根除者扑灭者，根除者，尤指以消除害虫为业的人。

He exterminates some species on a large scale, but favours the multiplication of others.

他使有些物种大批消亡, 却造成有利条件使另外一些物种成倍地增加.

This is also the God makes to the humanity seemed to be: If the human user-friendly survival will not have the significant human big disaster early warning which again like the dinosaur exterminates!

这也是神灵们对人类作出似有：如人类再不人性化生存将有如恐龙般灭绝的重大人类大劫难性预警！