It was very perspicacious of you to find the cause of the trouble so quickly.
你真是明察秋毫，问题的原因这麽快就找出来了。
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。
Objective To evaluate the effect of nose endoscope in treating the pertinacious nosebleed.
目的'：对顽固性鼻出血的鼻内镜诊治进行分析。
Results The curative effect of redundant colon-induced pertinacious constipation after operation was satisfactory.
结果结肠冗长症所致的顽固性便秘术后效果较为满意。
Questions buzzed in his head like pertinacious bees.
一连串问题在他脑子里盘旋着，就象纠缠不休的蜜蜂。