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1·Serotonin is a brain chemical closely associated with mood.

5羟色胺是一种存在于大脑内的与人的情绪关系密切的化学品。

2·Serotonin is a brain chemical closely associated with mood.

复合胺是一种大脑中与人类感情有关的化学成分。

3·And there's a third brain chemical that comes into play.

还有第三种脑化学物质也是不可或缺的。

4·Serotonin nis a brain chemical with a central role in sleep cycle regulation.

血清素是一种大脑中的化学物质，在睡眠周期中起着主要作用。浾。

5·Much of the joy of holiday shopping can be traced to the brain chemical dopamine.

节日购物的许多乐趣都同大脑中的化学物质多巴胺有关。

6·S.S.R.I.S are designed to help keep serotonin, a brain chemical, at a continuous level.

选择性5 -羟色胺再摄取抑制剂是用来帮助大脑中的一种化学成分——5 -羟色胺保持持续水平的。

7·The other looks at how a brain chemical called serotonin regulates the patience of rats.

而另一个则是研究大脑中的一种叫血清素化学物质如何调整老鼠的耐受力。

8·And the brain chemical dopamine was elevated-dopamine is a crucial part of the brain's reward circuitry.

并且大脑的化学物质多巴胺也提升了——多巴胺是大脑反馈回路的重要组成部分。

9·Tryptophan is subject to various changes by enzymes making the L-tryptophan produce a brain chemical called serotonin.

色氨酸会受到酶的影响发生很多变化，使得大脑中的L-色氨酸产生一种名叫5-羟色胺化学物质。

10·Carb-rich foods stimulate the release of a brain chemical called serotonin that regulates mood, food cravings, and sleep.

含有丰富碳水化合物的食物刺激大脑释放一种叫做血清素的化学物质血清素，可调节情绪，促进进食和睡眠。