intractable造句
        What may be done to reduce the influence of 
intractable opponents?
能做些什么来减少那些难缠的反对者的影响呢?
It emerged as the most 
intractable issue of our era.
它成了我们时代最难解决的问题.
The economy still faces 
intractable problems.
经济仍然面临着一些棘手的问题。
Objective To observe the curative effect of operation for 
intractable calcaneodynia.
目的观察顽固性跟痛症的手术治疗效果.