无法解决

Even the professor couldn't clarify the knotty point.

甚至教授也无法解决这个棘手问题。

Unless controlled the quality of musical file from fountainhead, otherwise inextricability.

除非从源头上控制了音乐文件质量，否则无法解决。

Simple example, in regular procedure inextricability, breaks free from the convention, seeks the method.

最简，法无法解决时候，打破规，寻求方法。