There is no easy fix for an intractable problem.
没有简单的办法解决难题。
The dating of planation surface is still an intractable problem.
而另一方面，夷平面的定年仍是一个棘手的问题。
The most intractable problem of glioma is tumor recurrence after operation.
脑胶质瘤治疗中最棘手的问题是术后肿瘤复发。
The most intractable problem of glioma is tumor recurrence after operation.
脑胶质瘤治疗中最棘手的问题是术后肿瘤复发。
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