She met with a lot of knotty problems.
她碰上了许多棘手
。
；有结；棘手，难解决She met with a lot of knotty problems.
她碰上了许多棘手。
Even the professor couldn't clarify the knotty point.
甚至教授也无法解决这个棘手。
The system of the Unconstitutionality Review in our academic research of science of Law is a hot issue in China, which also is a knotty problem.
于我国违宪审查制度是当今法学界研究一个热点，也是令法学界比较头疼一个。
It has a website, but it still has to unlace the knotty problem facing all weeklies trying to manage themselves into an online future — what does a Web-based weekly look like?
商业周刊拥有一个网站，但是它仍需要解决当下面临难，同时也是所有周刊杂志所面临，就是将来如何转变成为一家网上杂志，一家以网站为基础周刊看起来如何？
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