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老师问学生:“有一种动物有两只脚,每天早上太阳公公出来时,它都会叫你起床,而且叫到你起床为止,是哪种动物呀?”
The teacher asks the student: “There is an animal with two feet, it summons you to wake up every morning when the sun is out, and what kind of animal is it until you wake up?”