dud

n. 衣服、啞彈、無用物

a. 無用的

學術名詞

• 失效飛彈：航空太空、機械工程
• 不發彈：航空太空、機械工程
• 破舊衣服：紡織科技
• 啞彈：資訊
• 未爆彈：海事

英文釋義

1. someone who is unsuccessful
2. an explosion that fails to occur
3. an event that fails badly or is totally ineffectual
4. failing to detonate; especially not charged with an active explosive