每一颗子弹无不命中目标to hit a target every time without fail

• 三名老将,一上场就大开杀戒，几乎弹无虚发。

  Three veterans started shooting as soon as they appeared and almost didn't miss a shot.

• 突击队弹无虚发，百发百中。

  The commandos don't miss a shot; they hit their targets every time.

• 张明同志枪法很准，弹无虚发。

  Comrade Zhang Ming's marksmanship is very accurate, he never misses a shot.