🗣️ 情景例句
Yes, Mr. Carlson. Yes, sir.
是的 ，Carlson先生。好， 先生。
Do we exist?
我们实际存在吗？
By the way, I came into this classroom last Saturday morning, and it was not as clean as usual.
顺便提一句，上星期六上午我来到这个教室时