but a new hormone called glucagon gets produced

胰高血糖素这种新激素的产生
which reinforces that change.

也会强化该效应
These - you're going between these states throughout the day.

一天当中这两种状态交替出现
Where your cells experience those states is

细胞所经历的这些状态改变是受
through these extra cellular ligands called insulin and glucagon.

胰岛素和胰高血糖素这些外源配体影响
Steroid hormones can operate in a different way

类固醇类激素的作用原理有所不同
because of their structure.

这主要是因为它们的结构与蛋白质不同
They're small molecules, they're lipid soluble,

它们是小分子并且是脂溶性的
they can go from extracellular to intracellular.

它们能从胞外进入胞内
Let's take an example of estrogen, for example.

我把雌激素作为例子
A small molecule gets produced by cells in one part of the body,

雌激素是由身体某部分细胞分泌的
circulates in the blood, estrogen enters cells,

随着血液循环进入细胞