“哑弹”造句

至关重要的炮弹总是哑弹.
The crucial round is a dud.

迫击炮弹幕只有一发能命中目标, 这一发通常是哑弹.
Your mortar barrage round on the intended target. That round will be a dud.

如果坏盒中的哑弹是四枚,那麽对应的机率又会怎麽变化 呢 ?
How would the probability change if the bad pile contained four nonworking flares instead of three?

• #哑弹