Fur (skin and hair) is the collective name of skin and hair. Skin, that is, skin, is a tissue that covers the surface of the human body and is in direct contact with the external environment; hair is the vellus hair attached to the skin. Fur has the function of preventing the invasion of external evils, regulating body fluids and body temperature, and assisting breathing.
See the encyclopedia entry for details: Fur [Last revised on 2017/8/3 22:25:43 ***523 words]
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The fur in ancient books is as follows: