观察他或她对外界刺激的反应，然后你也需要一同样的情绪作回应——震惊，厌恶，幽默，同情等。

Watch his or her reactions to outside stimuli, then show the same emotions - shock, disgust, humour, compassion, etc.

youdao

或者是因为针灸造成了一种“超级安慰剂”效应，并触发了大脑内的一个反应，这种反应能改变身体对疼痛信号的感知和回应。

Or it could be that the needles caused a “super placebo” effect, triggering a real reaction in the brain that changes the way the body perceives and responds to pain.

youdao

现在也应该思考下你会如何做出反应——但却不要回应。

It's also where you start thinking of how you might react - but without reacting yet.

youdao

Or, for that matter, if you've got some quick reactions or thoughts or responses to the arguments that I'm laying out and you want to share them with the class as a whole, then very much I want to invite you to do this.

或者，关于那一点，如果你很快有回应,以及关于那个争论的想法或者反应,那么我会敞开胸怀,如果你想和全班同学分享这个，我会非常想邀请你这样做的。

耶鲁公开课 - 死亡课程节选