Introductions of new species, both accidental and deliberate, over the past few centuries show the problem.

在过去的几百年里，不管是有意地还是无意地引进新物种，都暴露出一些问题。

youdao

Introductions of new species, both accidental and deliberate, over the past few centuries show the problem.

在过去的几百年里，不管是有意地还是无意地引进新物种，都暴露出一些问题。

youdao