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中学生朋友们,你可能刚刚步入化学殿堂,你是否知道,从你出生那一天起,你就已经被化学世界所包围了。因为化学来自于自然,它是一门自然科
Middle school student friends, you may have just entered the hall of chemistry. Did you know that from the day you were born, you were surrounded by the chemical world. Because chemistry comes from nature, it is a natural science