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一只钥匙打不开锁,可它每天都开,乐此不疲。朋友嘲讽:你活得真累!钥匙:谁说的,我可一直在开心呀!
A key can not unlock, but it is open every day, never tired. Friends taunt: You are so tired! Key: Who said, I can have been happy!