The trigger finger is itchy as hell.

没人突突 不开心。

The trigger finger of his right hand was missing.

右手食指缺了一截。

Mexican cops have very itchy trigger fingers.

墨西哥警察的扳机手指非常痒。

Sorry. Itchy trigger finger. -Geez! What is with you?

-对不起。 触发手指发痒。-天哪！ 你怎么了？

Say it came from some underling with an itchy trigger finger.

就说是某个冲动的下属干的。

It must have been the latter cause which kept the trigger finger of the steady hand from exerting the little pressure that would have brought the great beast to at least a temporary pause.

一定是后一个原因导致稳健的手扣动扳机的手指无法施加足以让这头巨兽至少暂时停下来的微小压力。