It's a stress hormone.

它是一个压力性激素。

youdao

But why would adding a stress hormone actually reduce fear?

但，为什么添加了压力激素，却减少了恐惧呢？

youdao

But why would adding a stress hormone actually reduce fear?

但，为什么添加了压力激素，却减少了恐惧呢？

youdao