Second, cortisol starts cross-reacting with mineralocorticoid receptors, which normally only binds a related steroid hormone - mineralocorticoids which are secreted from the zona glomerulosa layer of the adrenal cortex.

第二，皮质醇对盐皮质激素受体产生交叉反应；此类受体一般只与一相关类固醇激素结合，即从肾上腺皮质球状带层泌盐皮质激素。

In other words, because the cortisol is structurally similar to mineralocorticoid, it can bind to that receptor and it can trigger the mineralocorticoid effect - which is mainly to increase blood pressure by retaining fluid.

换一法就是，皮质醇和盐皮质激素结构相似，因此可以和受体结合并且触发盐皮质激素作用，通过保持体液量让血压上升。