• 1. persistent ailment: 顽症 | 指难以治好的病
• 2. persistent cultural ailment: 文化顽症

• 1.Cancer is a kind of persistent ailment.
  癌症是一种顽症。
  dict.yoduao.com
• 2.Land annexation was a persistent ailment of the Ancient China.
  土地兼并是古代中国的一个顽症。
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• 3.Enterprises' receivable funds resulting in selling on credit is a persistent ailment for them.
  由赊销方式形成的企业应收账款一直是困绕企业的顽症。
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