n.[军]哑弹；无用的人或物；衣服，个人物品；adj.无用的；不完善的； 变形： 复数：duds 英英释义： dud[ dʌd ]n.someone who is unsuccessful同义词：flopwashoutan explosion that fails to occur同义词：misfirean event that fails badly or is totally ineffectual"the meeting was a dud as far as new business was co