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人体在新陈代谢过程中,会产生许多废物,这些废物大部分通过肾脏由尿排出体外。根据化验分析,尿液的成分中95％是水,3～5％是可溶性磷酸或尿酸
During the metabolic process, the body produces a lot of waste. Most of the waste is excreted through urine by the kidneys. According to laboratory analysis, 95% of the urine composition of water, 3 to 5% of soluble phosphoric acid or uric acid