Scientists have been studying the brain chemistry of this for years, decades.

多年来，科学家们一直在研究这种大脑化学物质。

The two women wanted to know if a person's body language affected the brain's chemistry.

两位女士想知道一个人的肢体语言是否会影响大脑的化学反应。

Drugs have the power to alter the brain's chemistry, and repeated use can permanently rewire the neural networks that support our ability to think, make decisions, learn, and remember things.

药物有能力改变大脑的化学成分，重复使用可以永久性地重新连接支持我们思考、决策、学习和记忆能力的神经网络。