very twisted

a very convoluted route/knot 曲折盘旋的路线／缠绕的绳结

Convoluted sentences, explanations, arguments, etc. are unreasonably long and difficult to understand.

His grammar explanations are terribly convoluted. 他对语法的讲解非常晦涩难懂。

Her book is full of long, convoluted sentences. 她的书里全是些冗长晦涩的句子。