Dead letter
死信, 形同虚设的规定\\n[法] 无法投递函件
🧩 词语组成解析
dead
[dɛd]
adj. 死去的;完全的;无感觉的;呆板的;
adv. 完全地;非常;绝对;极度;
n. 死者;（死一样的）寂静;极寒时候;
letter
['lɛtɚ]
n. 信;证书，许可证;字母，文字;字面意义;
vt. 用字母标明;写字母于;加标题;
vi. 写印刷体字母;
🗣️ 情景例句
A 20% discount will be given when you shop at Makro.
你在万客隆买东西会有20%的折扣。
Have you had breakfast yet?
你吃过早餐了吗？
becomes so worn and unreliable that it eventually is not worth mending.
磨损太厉害，老得一点儿也不准了，最终会不值得修理了。