尿液 (niàoyè) is a formal noun meaning "urine." It is used in medical, scientific, and formal contexts rather than casual speech. For everyday conversation, the simpler 尿 (niào) is more common.
医生要求他提交尿液样本做进一步检查。
yīshēng yāoqiú tā tíjiāo niàoyè yàngběn zuò jìnyībù jiǎnchá.
The doctor asked him to submit a urine sample for further testing.
尿液检测是体检中常见的一个项目。
niàoyè jiǎncè shì tǐjiǎn zhōng chángjiàn de yī gè xiàngmù.
Urine testing is a common item in physical examinations.
通过分析尿液,可以发现很多健康问题。
tōngguò fēnxī niàoyè, kěyǐ fāxiàn hěn duō jiànkāng wèntí.
Many health problems can be discovered by analyzing urine.