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上期的小实验,你有没有亲自试一试?这些奇妙的科学小实验可以让你在繁忙的学习生活中换口气,放松一下,当然,如果你能在实验中学到知识,实验室掌门人:埃及猫
Did you ever try this small experiment? These fantastic science experiments will allow you to relax and relieve yourself during your busy study life. Of course, if you can learn something during the experiment, the laboratory head Egyptian cat