Absent-minded Professor

An absent-minded professor came home very late one night. When he got to his door， he realized he had forgotten his key. He knocked and knocked until finally his wife opened the door. Since it was very dark， she did not recognize him and explained， “Im sorry， sir， but the professor is not at home.” The professor， absent-minded as ever， replied， “Well， Ill come back tomorrow.”

一天晚上，一位心不在焉的教授很晚才回家，到家門口時他才想起自己忘了帶鑰匙。他不停地敲們，終于，他的妻子起來開了門。天很黑，妻子沒有認出他來，解釋道，“很抱歉，先生，教授不在家?！边@個心不在焉的教授接著答道，“那我明天再來吧?！?