名词
中文翻译：黑尿
同义词：
['dark urine', 'dark urination']
例句：
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1.He had a black urine test after his surgery.
他在手术后进行了黑尿测试。
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2.The patient's urine was tested for drugs and found to be negative.
病人的尿液被检测以确定是否含有药物，结果为阴性。
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3. Black urine is often a sign of dehydration or infection.
黑尿通常是脱水或感染的迹象。