And even months after you've stopped smoking, that neurological circuit is still healthy and firing away in response to significant stressors.

即使在你戒烟几个月后，神经回路仍然健康， 并且会在应对重大压力源时做出反应。

And inside of that human, you would find a brain made of millions of cells in which you would find trillions of synapses firing away.

在人类的体内，你会发现他的大脑由数百万个细胞组成，在这些细胞中，你会发现数万亿个突触在不停地放电。