There is one trickiness about this reaction .

关于这个反应有个 棘手 处。

Medical catheter which is one of the most widely application clinical use medical equipment but the interrelated questions like thrombus and thrombin aroused by indwelling catheter are very trickiness in clinical therapy .

医用导尿管是临床医学中运用非常广泛的医疗用具，但留置导尿管引起的血栓、凝血等相关 感染问题是临床治疗中非常 棘手的问题。

However as the experiences of other countries of the world the transition course receive history bear and politics realistic hindrance So how to go through transition especially in implicit pension debt is an trickiness problem .

但是，正像世界其他国家的经历一样，这个转轨过程受到了历史负担及政治现实的阻碍，因此如何转轨的问题 还有 进一步 探讨 的 必要，特别是在隐形养老金债务 的问题 处理上。