So, how can we explain those dead cedars that were infected with beetles?

那么，我们该如何解释那些因为甲虫侵袭而死亡的黄杉呢？

youdao

In those cases, the beetles attacked trees that were already damaged or sick and what probably dead any way.

这种情况是因为甲虫侵袭的是已经受损或者患病的黄杉，这些黄杉没有甲虫也会死去。

youdao

I know, beetles played dead in order to self-defense, I also added a little knowledge.

我知道了，甲虫装死是为了防身，我又增添了一个小知识。

youdao

Once the beetles hit a tree, it's as good as dead within five years.

WSJ: Mass. creates quarantine zone to contain insect