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每个正常的人,都或早或迟地在不同部位有过不同程度的痛感。疼痛,虽然会给人们带来痛苦,但是疼痛也并不是一无是处的,甚至它对人类的生
Every normal person has different degrees of pain in different parts of her body, sooner or later. Although pain can cause pain to people, pain is not useless at all, even to human beings