dud
noun [ C ] informal uk/dʌd/ us/dʌd/
没用的东西，废品
something that has no value or that does not work
Are there any more batteries? This one's a dud. 还有没有电池？这个电池用完了。
He's made eleven movies in the last 20 years and not one has been a dud. 在过去的20年里他一共拍了11部电影，每一部都是精品。
dud
adjective informal uk/dʌd/ us/dʌd/
没用的，无价值的
not working or not having any value
A customer had tried to pay with a dud cheque (= one for which a bank will not give money). 有个顾客想用一张假支票蒙混过关。