Really? - Four rings, they're not there.

是吗 -四响 才是真的不在。

No answer, yet. Honey, it's only been four rings.

加上我的30次，出问题了。

Steroids can be naturally occurring or synthetic, but what all steroids have in common is a molecular structure that consists of a base of four rings made of 17 carbon atoms arranged in three hexagons and one pentagon.

类固醇可以是天然存在的，也可以是合成的，但所有类固醇的共同点是一个分子结构，该结构由四个环组成，该环由 17 个碳原子组成，排列成三个六边形和一个五边形。