And the threat to native species from alien invaders is growing, the experts warned.

专家们强调，外来入侵物种对土著物种的威胁正在扩大。

youdao

But if they are already there, the issue is how to manage the alien invaders, "MacKinnon says."

但如果它们已经在当地存在了，问题就是如何管理这些外来入侵物。

youdao

A violent species of alien invaders, they destroyed entire worlds in their quest to conquer the galaxy.

作为凶残的异族入侵者，它们摧毁一切阻挡它们征服全银河的星球。

youdao