Cdh
abbr. constant differential height 常微分顶点
🗣️ 情景例句
Oh, it must be Alexandra.
一定是Alexandra。
Fire, water, and money are good servants, but bad masters.
水火金钱是忠仆，使用不当是祸首。
Perhaps not. It's 6674044.
可能没有。号码是6674044。