Jnd
abbr. joined 加入的，参加的，结合的
🗣️ 情景例句
Men and women, young and old, to give us their time.
不管男女老幼 ，请他们贡献时间。
What can I do for you?
我能为您做些什么？
The letter x stands for an unknown number.
字母x代表未知数。