我扣动了扳机，可是枪打不响，那鹿也就逃走了。 I pulled the trigger, but the gun hung fire and the deer escaped.
点射由于扣动扳机而从自动武器中射出的一定数量的子弹 The number of bullets fired from an automatic weapon by one pull of the trigger.
扳手一种有固定或可调整的钳口的手用或机械工具，用来咬合、转动或扭转如镙钉、镙铨或管子的物体 Any of various hand or power tools with fixed or adjustable jaws for gripping, turning, or twisting objects such as nuts, bolts, or pipes.
我一扣扳机，枪就响了。 I pulled the trigger and the gun went off.
