Cadr
abbr. clean-air delivery rate 洁净空气传送速度
🗣️ 情景例句
Without coffee I could never get up in the morning.
不喝咖啡我早上起不来。
He that will eat the nut must first crack the shell.
欲所得，必先劳。
Can I see it?
我可以看看吗？