trigger

US /ˈtrɪɡ.ɚ/
UK /ˈtrɪɡ.ɚ/
"trigger" picture
1.

扳機, 觸發器

a small device that releases a spring or catch and so sets off a mechanism, especially in a gun

:
He pulled the trigger and the gun fired.
他扣動了扳機,槍響了。
Be careful not to accidentally touch the trigger.
小心不要意外碰到扳機
2.

誘因, 起因, 導火索

an event or circumstance that is the cause of a particular action, process, or situation

:
The loud noise was the trigger for his anxiety attack.
巨大的噪音是他焦慮症發作的誘因
Stress can be a major trigger for migraines.
壓力可能是偏頭痛的主要誘因
1.

觸發, 引起, 啟動

cause (an event or situation) to happen or exist

:
The alarm was triggered by smoke.
警報被煙霧觸發了。
His comments triggered a heated debate.
他的評論引發了一場激烈的辯論。