a dud battery

• 废电池

a dud battery的用法和样例：

例句

1. The whole plan turned out to be a dud.
   整个计划到头来完全失败了。
2. The meeting was a dud as far as new business was concerned.
   从新业务的角度来看，这次会议毫无收获。
3. This battery is a dud.
   这电池是废的。
4. When your harmonic is a dud, arpeggiate your anxiety.
   当你的泛音没弹出声音,不要让你的不满破坏心情。
5. 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。