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；此受体一般只与一种醇激素结合，即从肾上腺皮质球状带层分泌盐皮质激素。

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.

换一种说法就是，皮质醇和盐皮质激素结构似，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。