c. 1825, "person in ragged clothing," from duds (q.v.). Sense extended by 1897 to "counterfeit thing," and 1908 to "useless, inefficient person or thing." This led naturally in World War I to "shell which fails to explode," and thence to "expensive failure."
雙語例句
1. He replaced a dud valve.
他換掉了壞閥門。
來自柯林斯例句
2. The mine was a dud.
礦井廢棄了。
來自柯林斯例句
3. The new manager is a complete dud.
新經理完全是個廢物.
來自辭典例句
4. A fiery ball shot up over the rooftops, where it disappeared in mid - air -- a dud.
他聽見一聲響,一個發光的東西直往天上衝, 衝過了屋頂在 半空 中不見了.
來自漢英文學 - 家（1-26） - 家（1-26）
5. The meeting was a dud as far as new business was concerned.