A lever which, when pulled by the finger, releases the hammer of a gun.

(枪的)扳机。

Any similar device, as for springing a trap.

制动机；制滑器。

To initiate or precipitate (an action or series of actions or events).

引发；促使。

Large price increases will trigger off demands for even larger wage increases.

物价的大幅增加将引发更大幅度加薪的要求。