Stress may act as a trigger for these illnesses.压力可能会成为引发这些疾病的原因。A man pointed a gun at them and pulled the trigger.一名男子拿枪指着他们，接着扣动了扳机。Unresolved or unacknowledged fears can trigger sleepwalking.残留在心里的或不为人知的恐惧都可能引发梦游。...
Loss of confidence could trigger a run on Citibank that would threaten the entire financial system.民众信心的丧失可能导致花旗银行出现挤兑，从而威胁到整个金融体系。The ignitor is the trigger of the engine.点火器是引擎的启动装置....trigger devices for nuclear weapo...