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每个人都有一件奇特的“衣服”,这件衣服会和你一起长大,它的名字叫“皮肤”。皮肤真是一件奇妙的“衣服”,它把你全身上上下下裹得严严实实,不让细菌和灰尘侵蚀,还保持你的正常体温。你身上皮肤的厚薄是不同的。皮肤最厚的地方是脚底,最薄的地方是眼皮。指甲是特殊的皮肤,又硬又透明,因为指甲没有神经,所以剪指甲不会痛。世界上没有两个人的皮肤是一模一样的。所以,脚印和指纹也没有两个人是完全一样的,连孪生双胞胎也有差异。因此,警察可以通过鉴别指纹来搜寻罪犯。
Everyone has a peculiar “clothes”, this dress will grow up with you, its name is “skin.” The skin is really a fantastic “dress” that holds your whole body up and down tightly, without letting bacteria and dust erode, and keeping your normal body temperature. The thickness of your skin is different. The thickest place is the soles of the feet, the thinnest place is the eyelids. Nails are special skin, hard and transparent, because nails do not have nerves, so nails will not hurt nails. No two people in the world have exactly the same skin. Therefore, no two footprints and fingerprints are exactly the same, even the twin twins are different. Therefore, police can search criminals by fingerprinting.