Certified mail
[经] 挂号信
🧩 词语组成解析
certified
[['sə:tifaid]]
a. 证明合格的\\n[化] 检定的; 证明的; 书面证明的
mail
[mel]
n. 邮件，邮政;邮政（制度）;邮务员，邮递员;〈古〉袋，旅行包;
vt. 邮寄;给…穿盔甲;
vi. 投邮;
🗣️ 情景例句
What is your biggest accomplishment on the job?
你在工作上最大的成就是什么？
I've never heard that piece before.Who wrote it?
我从来没听过那乐章，那是谁写的？
How time files! More than a week has passed already!
光阴似箭！已经过了一周多时间了！