论文部分内容阅读
你知道吗?为了提供你一分钟的健康生活,你的身体里有多少精密的部件在准确地“运转”?多少复杂的化学反应在交织地进行?它们之中有许多还可以称得上是“世界之最”哩!世界上最长的“管道”人体各处遍布着一千多亿条纤细的微(wei)小血管。尽管每条血管都很短,但全部连接起来却几乎长达10万公里,可绕地球两圈。五个人的微血管连起来可以伸展到月球上去。这些血管时刻不停地向全身的组织细胞输送养料和能源,只要停止片刻人就不能生存。
Did you know that in order to provide you a minute of healthy living, how many precision components in your body are accurately “working”? How many complex chemical reactions are interlaced? Many of them are also well-known The world’s longest “pipe ” There are more than one hundred billion small wei tiny blood vessels around the body. Although each blood vessel is short, it connects almost all of it up to 100,000 kilometers and can circle two times around the earth. The capillaries of five people can be linked to the moon. These vessels constantly deliver nutrients and energy to the whole body’s tissues and cells, and can not survive for a while.