动词
中文翻译：咳嗽
同义词：
['heave', 'hack', 'huff', 'sneeze']
例句：
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1. He coughed up some blood after the surgery.
手术后他咳出了一些血。
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2. The doctor advised him to take a rest and cough it out.
医生建议他休息并咳出痰。
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3. I've been coughing for the past two days, but I don't think it's serious.
我过去两天一直在咳嗽，但我认为它不严重。