Cadr
abbr. clean-air delivery rate 洁净空气传送速度
🗣️ 情景例句
Mr. Stewart …
Stewart先生……
I hope you'll forgive me.
我希望你能原谅我。
He suggested that a double railway-tunnel should be built.
他提议建一条双轨隧道，这样就解决了通风问题。