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我们人类的生存环境是非常险恶的,每时每刻都有无数的细菌、病毒通过空气、饮食及皮肤等途径侵入体内而引起疾病;生活环境中还存在着各种有害或有毒的物质,构成对人体的危害;体内各种代谢废物尤其是癌细胞,无时无刻不在威胁着人的生命。尽管如此,人类却照
The living environment of our human beings is extremely sinister. There are countless bacteria all the time. Viruses invade the body through the air, diet, and skin and cause diseases. In the living environment, there are various harmful or poisonous substances that constitute Harm to the human body; the body of various metabolic waste, especially cancer cells, all the time threatening human life. In spite of this, humanity still shines