intractable的例句（intractable在句子中的用法）

• It emerged as the most intractable issue of our era. 它成了我们时代最难解决的问题.
• 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.
• The economy still faces intractable problems. 经济仍然面临着一些棘手的问题。
• 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？