Suddenly Guy, more by way of a nervous twitch than with malice aforethought, pulled the trigger.

盖伊突然扣动了扳机，但并非有意开枪，只是因为太紧张，抽搐了一下。

The hunter cocked his rifle.

猎人扣扳机准备射。

He accidentally triggered his rifle.

意中扣发了步枪的扳机。

As well as making the explosion more reliable, this allowed military engineers to turn the fougasse into a booby trap.

合股细线制成，一头系在燧发装置的扳机上。