1. 旋绕的,费解的：traction 牵引,牵引力 market traction | convoluted 旋绕的,费解的 | imprint 刻上记号,印记

2. 费解的：patterns of discourse篇章模式 | convoluted 费解的 | shot-gun象霰弹枪似的

3. 回旋状的：convoluteconvolution 卷旋 | convoluted 回旋状的 | convolutional 脑回的

4. 旋绕的/回旋状的：convolute /回旋/卷旋/盘旋/旋绕的/ | convoluted /旋绕的/回旋状的/ | convolution /回旋/卷旋/盘旋/

1. 费解的;复杂难懂的
    If you describe a sentence, idea, or system as convoluted, you mean that it is complicated and difficult to understand.

    e.g. Despite its length and convoluted plot, ''Asta''s Book'' is a rich and rewarding read...
           虽然篇幅很长，而且情节复杂，但是《阿斯塔的书》仍不失为一部内容丰富、值得一读的作品。
    e.g. The policy is so convoluted even college presidents are confused.
           这项政策太令人费解，甚至连大学校长们也是一头雾水。