“啞彈”造句

至關(guān)重要的炮彈總是啞彈.
The crucial round is a dud.

迫擊炮彈幕只有一發(fā)能命中目標(biāo), 這一發(fā)通常是啞彈.
Your mortar barrage round on the intended target. That round will be a dud.

如果壞盒中的啞彈是四枚,那麼對(duì)應(yīng)的機(jī)率又會(huì)怎麼變化 呢 ?
How would the probability change if the bad pile contained four nonworking flares instead of three?

• #啞彈