两个学生在看法典时能否抽烟这个问题上争论不休,于是找教授评理。一学生问:“教授,看法典时能抽烟吗?”教授严肃地说:“当然不能。”“那抽烟时看法典行吗?”另一学生问。“那没问题。” The two students argued over the question of whether cigarettes could be smuggled at the very moment, so they asked the professor for comment. A student asks: “Professor, can you find out when smoking is possible?” The professor said solemnly: “Of course not.” “What do you think when you smoke?” Asked another student. “That’s fine. ”