名词
中文翻译：血痰
同义词：
['bloody mucus', 'bloody phlegm例句：1. He coughed up a bloody sputum after the surgery.（手术后，他咳出了血痰。）']
例句：
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1. He coughed up a bloody sputum after the surgery.
手术后，他咳出了血痰。
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2. The patient had a fever and was coughing up bloody sputum.
病人发烧并咳出了血痰。
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3. Doctors found that the patient's bloody sputum indicated an infection.
医生发现病人的血痰表明有感染。