无法解决

Even the professor couldn't clarify the knotty point.

甚至教授也无法这个棘手问题。

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。

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

最简单例，在常法无法时候，打破常规，寻求方法。