名词
中文翻译：祛痰药同义词
同义词：
['expectorant', 'expectorant agent']
例句：
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1. The doctor prescribed a strong expectorant to help him cough up his chest infection.
医生开了一种强力的祛痰药，帮助他咳出胸部感染。
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2. After taking the medication, she felt her chest clearer and her breathing easier.
服用药物后，她感觉胸口更轻松了，呼吸也顺畅了。
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3. The patient was advised to take several doses of the expectorant daily to improve his condition.
患者被建议每天服用几次祛痰药来改善他的病情。