The most complex components of the fluid mosaic are proteins.

流体马赛克最复杂的成分是蛋白质。

It's a neurological condition with a complex genetic component.

这是一种具有复杂遗传成分的神经系统疾病。

Spillways are often the  most complex and expensive components of a dam, and that is definitely true at Oroville.

溢洪道通常是大坝最复杂、最昂贵的组成部分，奥罗维尔确实如此。