A bullet is a small piece of metal with a pointed or rounded end, which is fired out of a gun. 子弹
noun [具体名词] 子弹，弹丸；（标示用的）黑圆点；<美>（运动中）高速球
Two of the police fired 16 bullets each. 两名警察各发射了16枚子弹。
Two of the police fired 16 bullets each. 两名警察各发射了16枚子弹。
