Cadr
abbr. clean-air delivery rate 洁净空气传送速度
🗣️ 情景例句
Thanks. But I have a question.
谢谢。但我想问一下
We shall never have friends if we expect to find them without fault.
指望朋友无缺点，永远休想交朋友。
What a shame!
真是遗憾。