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.

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。

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Drug can be excreted from the kidney tubular damage, resulting in proteinuria, hematuria, blood urea nitrogen, creatinine, and other higher Renal damage.

药物从肾脏排泄可损害肾小管，产生蛋白尿、血尿，血中尿素氮、肌酐升高等肾功能损害的表现。

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Other polymers, e. g. urea-formaldehyde and polyurethanes, are important insulating materials for reducing heat losses and hence reducing energy usage.

另一些高聚物，比如，脲甲醛和聚脲，是非常重要的绝缘材料可以减少热量损失因而减少能量损耗。

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Dr Ip looked at which genes were active in the gill-like structures of the mouth and found one that appears, from its similarity to genes of known function from other species, to encode a urea transporter.

ECONOMIST: Softshell turtles urinate through their mouths