Tyrosine is needed to synthesize dopamine and norepinephrine, and tryptophan is needed to synthesize the neurotransmitter serotonin.

酪是合成多巴胺、去甲肾上腺素所必须；是合成神经递质清素所必须。

They possess tryptophan, which helps create brain soothing hormones.

它们拥有，帮助脑部释出舒缓荷尔蒙。

It contains tryptophan, a chemical in the brain that is used to produce serotonin.

它含有，即一种在大脑中用来清素化学物质。

Dude, that turkey tryptophan is really getting to me, man.

兄弟，那火鸡里真让我不行了。

And tryptophan from our diets travels into the brain, where then the brain converts it into serotonin.

我们从饮食中摄取会进入大脑，然后被大脑转化为清素。

One particularly important product for the brain is the amino acid tryptophan.

一种对大脑特别重要物是基。

In these experiments participants' serotonin levels are lowered by depriving them of tryptophan.

在这些实验中，参与者清素水平会因剥夺而降低。

And so tryptophan remember is an amino acid.

所以，是一种基，请记住这一点。

Dude, that turkey tryptophan is really gettin' to me, man.

伙计，火鸡真让我着迷，伙计。

It's made from a amino acid called tryptophan.

它是由一种名为基制成。

Where is the factory that turns tryptophan into the neurotransmitter serotonin?

转化为神经递质清素工厂位于哪里？

And you'll see tryptophan, and tyrosine, and phenylalanine, and quinone gas, and lactic acid, cholesterol.

你会看到、酪、苯丙、醌类气体、乳、胆固醇等成分。

And with food, so things like tryptophan, we use tryptophan to turn into melatonin.

而在食物中，比如，我们会利用来转化为褪黑激素。

It's produced by bacteria in the gut when breaking down tryptophan.

它是由肠道细菌分解时。

Tryptophan and amino acid, we've talked about before.

是一种基，我们之前讨论过。

And in that way, they... What's tryptophan?

这样一来， 它们… … 是什么呢？

The way it works is it's actually off when tryptophan or whenever that chemical is present.

其工作原理是，当或其他类似化学物质存在时，系统实际上是关闭。

It is devoid in tryptophan and it is very low in the branch chain amino acids.

它不含，且支链基含量非常低。

No, it's not fear of tryptophan.

不，这不是对恐惧。

And what do I need in order to convert tryptophan to serotonin?

我需要什么才能将转化为清素？