1. 盘旋结构;回旋;盘旋
Convolutions are curves on an object or design that has a lot of curves.

2. 错综复杂
You can use convolutions to refer to a situation that is very complicated.

1. the action of coiling or twisting or winding together

2. a convex fold or elevation in the surface of the brain

Synonym: gyrus

3. the shape of something rotating rapidly

Synonym: whirlswirlvortex