他面对威胁时噤若寒蝉，不敢反抗。

He kept quiet out of fear when faced with threats and didn't dare to resist.

看到异特龙后，圆顶龙群转身撤退，留下它们的首领独自面对威胁。

At the sight of the Allosaurus, the Camarasaurus herd turns and retreats, leaving its leader to face the threat alone.

戴维对此作了进一步解释，在生命中，每个人都会面对威胁和挑战，也需要了解如何应对这些问题。

Davey elaborates further saying, in life everyone will be faced by threats and challenges at some point and will need to know how to deal with these when they arise.