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有一日,教授散步的时候碰巧遇见他的一名学生,那个学生看上去十分沮丧,于是教授主动走上前去跟这位学生打招呼:“这么美好的一天,怎么会有人看起来如此严肃呢?”教授风趣地说道。
One day, when the professor happened to meet one of his students during a walk, the student looked very depressed. So the professor took the initiative to go say hello to the student. “How can someone look so serious on such a beautiful day?” ? "Professor said humorously.