Objective To study the etiology of pertinacious chronic cough in children.
目的探讨小儿难治性慢性咳嗽的病因。
His style of argument in meetings is not so much aggressive as pertinacious .
他在会上的辩论风格应该说是坚持己见，而不能说是咄咄逼人。
His style of argument in meetings is not so much aggressive as pertinacious .
他在会上的辩论风格应该说是坚持己见，而不能说是咄咄逼人。
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