U.S. experience has shown that an exploding mine is not likely to bring a dud online.
美国的经验表明，一枚爆炸的地雷不大可能造成其他哑弹。

People predicted that by week's end Obama would either be a major star or a major dud.
有人预测，本周末奥巴马要么是个明星要么是个哑弹。

I am trying to get the slide projector to work. It looks like the light bulb is a dud！
那就别摆弄幻灯了。我光听就行了。

The defining characteristic of a true dud is that he or she resists improvement staunchly.
真正得庸才最典型得特点是他或她会坚决抵制进步。

Everyone who took part in the rehearsal are confused as to the reason why a dud can explode.
参加演习的人都不明白，瞎火怎么可能会爆炸？

Your mortar barrage will put exactly one round on the intended target. That round will be a dud.
迫击炮弹幕只有一发能命中目标，这一发是哑弹。

the first experiment was a real turkey the meeting was a dud as far as new business was concerned.
不睦导致了合作的完全失败