土地兼并是古代中国的一个顽症。

Land annexation was a persistent ailment of the Ancient China.

行人违章已成为困扰广州交通管理者的“交通顽症”，严重影响着出行的安全。

The violations of regulations of passers-by have become a traffic disease of Guangzhou Traffic Management.

《顽症在这里康复》在药铺门口设摊的游医，冷清地等待着那些“不理性的病人”。

Recover here even with persistent ailment:A doctor sets a stall in front of the medicine shop, quietly waiting for those"irrational patients".

此外，白首的研究表明这种复杂顽症也许病源很简单，辨认出那种病源也许会带来最重大的发现。

Beyond that, the Whitehead research suggests that this stubbornly complex disease may have a simple origin, and the identification of that origin may turn out to be the most important step of all.