This drop in blood pressure is almost instantly compensated for by a baroreceptor reflex, which is a homeostatic mechanism to maintain blood pressure.

血压下降几乎可以通过压力感受器反射立即得到补偿，压力感受器反射是维持血压的体内平衡机制。

The baroreceptor reflex is a homeostatic mechanism that quickly responds to the drop in blood pressure that results from actions such as moving from a lying to a standing position.

压力感受器反射是一种稳态机制，可快速响应因从躺着移动到站立姿势等动作而导致的血压下降。