手指放在扳机上
to be ready to shoot
准备好射击
扣动扳机
按下扳机
手指紧扣扳机
indicates preparing to shoot
表示准备射击
the finger used to pull the trigger of a gun
扳机装置
the system that makes a gun fire
使枪支发射的系统
a protective loop around the trigger of a firearm