皮肤
骨折愈合标准付之一炬Skin
股票投资基本分析人体的最基本组成单位是细胞，许多同类细胞形成组织（如上皮组织、肌肉组织等），组织又构成具有一定生理功能的器官（如心脏、肾脏、肝脏等）。
The basic composition unit of human body is cell. A lot of similar cells form tissue (i.e. epithelial tissue, muscular tissue, etc). Also, tissue makes up organs which have physiological function (i.e. heart, kidney, liver, etc).
人体全身覆盖着皮肤，我们所能够看到的人体实际上是全身的皮肤。成年人体表皮肤的面积可以达到1.5-2.0平方米，新生儿为0.5平方米，全身的皮肤约占人体重量的16%左右。
The whole body of human is covered by skin. Actually, the human body we can e is skin of whole body. The area of adult’s epidermis can reach 1.5 to 2.0 square meters. Neonate’s is 0.5 square meter. The skin of whole body approximately account for 16% of weight.
皮肤柔软、坚韧，可以缓冲外界的刺激和打击，还可以分泌皮脂和汗液，二者混合则形成天然护肤品，在这层保护膜的覆盖下，皮肤健康、光洁、靓丽，同时可以防止在干燥的环境下体内水分过度蒸发，在潮湿的环境下，还可以预防外界水分向皮下组织扩散。炎热的天气，皮肤可以排出汗液，蒸发后调节体温，紧张劳累时还可以帮助肾脏排泄体内代谢的产物。皮肤具有敏感的温热觉、触觉、痛觉等感觉功能。平时皮肤还可以从自然界吸取少量氧气，在阳光的作用下可以自我合成人体代谢所必需的维生素D，以促进骨骼的发育。健康的皮肤表面细菌难以生存，更不能侵入人体，皮肤还担负着免疫调节作用。
Skin is soft, tough and tensile, and slow down the stimulation and attack from external world. It also can crete bum and sweat, which can mix up to natural skin care product. Under this prervative, skin is healthy, bright and clean, and beautiful. At the same time, it can protect the internal moisture over evaporation from drying surrounding; also can protect external water spread to subcutaneous tissue. In hot weather, skin squeeze sweat which can regulate body temperature after evaporation. It can also help kidney excrete internal metabolites when body is nervous or overworked. Skin has nsory function like nsitive n of heat, touch and pain. At ordinary times, skin can
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absorb a little oxygen from nature, under the sunlight’s effect, it can synthesis vitamin D which is necessary for human’s metabolize by itlf to hastening skeleton growth. Bacteria hardly exist on the healthy skin, even more is charged with immunization and condition function.
思想政治表现自述
上的内容足以证实皮肤是人体最大的器官。正因为如此，如果人被烧伤体表面积达到30%，就可能出现皮肤功能不全，而超过新手学做面包50%的大面积烧伤，则会出现皮肤功能衰竭。中国命运的决战
The above content is enough to authenticate that skin is the biggest organ of human body. Becau of that, if human body surface area account for 30%, it would appear incomplete of skin function. If its burned area is over 50%, it would appear exhaustion of skin function.
