一日译练 | 为什么有些人会成为连环变态杀人狂？

一日一练  必成大大

责任编辑：小可

    CATTI考完啦！！！但我们的练习不能停哦！毕竟考试不是目的，成为大牛译员才是我们的方向嘛！

    不过呢，这一周我们决定放飞自我，带大家休闲休闲，告别原先枯燥无味的主题，来一点刺激的东西吧！

    没错！这周的主题就是！

【犯罪】！！！

作为《犯罪心理》、《犯罪现场调查》、《基本演绎法》、《火村英生的推理》、《神探伽利略》等一众推理剧的骨灰级爱好者，小编可以负责任地告诉大家：今天的练习，真的，太。有。趣。了。

事不宜迟

Let's get started!

生词提醒：

E-C

psychopathic 精神变态的

orbital cortex 眶额皮质

orbits 眼眶

temporal lobe 颞叶

MAO-A gene 单胺氧化酶A基因（可以直接说MAOA暴力基因）

chromosome 染色体

serotonin 血清素

utero 子宫

（很多词汇其实之前的练习里都涉及过啦！看着眼生的话要自我检讨哦！）

准备好就开始练习吧~

（向上滑动查看原文）

The question is, "How do you end up with a psychopathic killer?" And here's, just to give you the pattern. The pattern is that those people, every one of them I looked at, who was a murderer, and was a serial killer, had damage to their orbital cortex, which is right above the eyes, the orbits, and also the interior part of the temporal lobe. So there is the pattern that every one of them had, but they all were a little different too. They had other sorts of brain damage. 

A key thing is that the major violence genes, it's called the MAO-A gene. And there is a variant of this gene that is in the normal population. Some of you have this. And it's sex-linked. It's on the X chromosome. And so in this way you can only get it from your mother. And in fact this is probably why mostly men, boys, are psychopathic killers, or are very aggressive. Because a daughter can get one X from the father, one X from the mother, it's kind of diluted out. But for a son, he can only get the X chromosome from his mother. So this is how it's passed from mother to son. 

And it has to do with too much brain serotonin during development, which is kind of interesting because serotonin is supposed to make you calm and relaxed. But if you have this gene, in utero your brain is bathed in this, so your whole brain becomes insensitive to serotonin, so it doesn't work later on in life.

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