dud
adj. 无价值的
n. 哑弹；无用的人或物
sp. （复数）duds: 衣服；个人物品.
近义词：flop，washout，failure，fiasco，dampsquib，letdown，dog，disappointment，useless，worthless，ineffective，nogood，broken，duff，turkey，bomb，misfire，
英英释义
Noun
- someone who is unsuccessful
- an explosion that fails to occur
- an event that fails badly or is totally ineffectual;
"the first experiment was a real turkey" "the meeting was a dud as far as new business was concerned"
Adjective
- failing to detonate; especially not charged with an active explosive;
"he stepped on a dud mine"
例句
用作形容词(adj.)
- How can we be expected to carry out our jobs with the dud equipment you gave us?你怎么能指望我们用这些你给的烂设备来完成工作呢？
用作名词(n.)
- During yesterday's sham battle, party A fired a dud.昨天的军事演习，甲方放了一个哑炮。
- This battery is a dud.这电池是废的。
- The new manager is a complete dud.新经理完全是个废物。
- The whole plan turned out to be a dud.整个计划到头来完全失败了。
- Two of the fireworks in the box were duds.盒子里的烟火有两个是坏的。