a Gordian knot

常见例句

The Israelis and Palestinians are in a conflict which is a Gordian knot that may not be resolved for a long time.
以色列和巴勒斯坦之间的斗争是个难解的问题，长时间都难以解决。
On the one hand, POS study is always a Gordian knot to Chinese linguists ever since the beginning of Modern Chinese Linguistics.
首先，从汉语语言学研究的角度看，词类问题也一直是一个老大难问题。
This learns a territory in culture and education of domestic and international language, all along is one compares an a Gordian knot.
这在国内外语文教学领域，向来都是一个比较棘手的新问题。

It is a Gordian knot the Chinese state has only begun to unpick.
ECONOMIST: A $45 billion shot in the arm The
This is necessary to deal with the myriad insurance billing schemes that can best be described as a Gordian Knot designed by Rube Goldberg.
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This is a real Gordian Knot.
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