Abcd
abbr. 加快收寄投递系统（Accelerated Business Collection and Delivery）
🗣️ 情景例句
After studying an hour, I finally got the hang of the lesson.
我学习了一个小时，终于理解了这一课的要点。
Like cow, like calf.
有其父必有其子。
Take it easy, you will be all right in a couple of days.
别担心，你两天之内就会痊愈的。