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
Do you have any assurance for its quality?
你们有任何品质保证吗？
Every tree is known by its own fruit.
观其言行，知其为人。
No one noticed the boy as he crept off.
当男孩从船里爬出来时，谁也没有发现他。