有机溶剂（碳氢化合物）是指脂肪族、脂环族、芳香族、卤族、氧化碳氢化合物、乙烯、醇类以及用于多种工业加工和家庭使用的有机溶剂。如甲苯、柴油、干洗剂、松节油、油漆和稀释剂等等。
汗液几乎全是由水组成，也含有微量的化学元素，包括氨、尿素、盐和糖。
Sweat is also known as perspiration, and it is made almost completely of water, with tiny amounts of other chemicals like ammonia, urea, salts, and sugar.
尿素在水中会水解成氨。
它们从皮肤的汗水中吸收尿素和氨，将其转化为对身体有益的氧化氮。
They feed off urea and ammonia in the sweat from the skin, turning them into nitric oxide, which is very good for the body.
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