1. No, it's called endogenous depression, and it's caused by your brain chemistry.
不 这叫内源性抑郁 是由你大脑的化学物质引起的
2. It's this endogenous opioid release that the placebo effect is able to produce.
安慰剂效应引发的 正这种内源性阿片类物质的分泌
