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，皮质对盐皮质受体产生交叉反应；此类受体般只相关类固结合，即从肾上腺皮质球状带层分泌盐皮质。

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.

换说法就是，皮质和盐皮质结构相似，因此可以和受体结合并且触发盐皮质作用，通过保持体液量让血压上升。