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目的：探讨小儿慢性咳嗽的病因。
Objective: To investigate the cause of chronic cough in children.
youdao
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目的探讨小儿难治性慢性咳嗽的病因。
Objective To study the etiology of pertinacious chronic cough in children.
youdao
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目的探讨小儿难治性慢性咳嗽的病因。
Objective To study the etiology of pertinacious chronic cough in children.
youdao