扳机

The hunter cocked his rifle.

猎机准备射击。

He accidentally triggered his rifle.

他无意中发了他步枪的机。

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

盖伊突然动了机，但他并非有意开枪，只是因为太紧，抽搐了一下。

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

绊索由合股细线制成，一头系在燧发装置的机上。