Because it takes three units where there's only four choices at each position to have at least 20 unique combinations.

因为每个位点上仅有四种可能性,只有采用三个碱基一组,才能取得至少二十种不同的组合方式

耶鲁公开课 - 生物医学工程探索课程节选

There are 64 combinations of three bases and I only need to describe 20, so there's combinations to spare.

三个一组的碱基产生六十四种组合,而我只需对应二十种氨基酸,所以一种氨基酸会对应不同密码子

耶鲁公开课 - 生物医学工程探索课程节选

You find some way of systematically going through the list. Yet, I often see people, when they're debugging, proceeding at what, to me, looks almost like a random fashion of looking for the bug.

是不是目标元素,我们有一种系统化的，遍历数组的方法，然后我经常看到,有些人调试的时候。

麻省理工公开课 - 计算机科学及编程导论课程节选

I think they were just a succession of dings but I'm hearing it-- my mind wants to hear this organization So there's another organization here of units of three.

我想它们就是一组连续的,叮,但我听到的是这样的,我的大脑希望听到这样的组织方式,那么这里还有另外一种三拍一组的形式

耶鲁公开课 - 聆听音乐课程节选

I'd only have 16 possible two base sequences, that's not enough to specify over 20 amino acids.

如果两个碱基一组那一共只有十六种组合,不够和二十种氨基酸来一一对应

耶鲁公开课 - 生物医学工程探索课程节选

So this just - just saying a little bit more about the sections, there's three sections, we have online discussion section sign up, has anybody tried to do that yet?

这只是对组会做更多一些的介绍,有三种组会,我们有在线讨论组会,有人曾经尝试过这个么

耶鲁公开课 - 生物医学工程探索课程节选

As you may know, there's yet another organization where we could group this in units of four but for all intents and purposes-- there are a few nuances to it-- four is simply a multiplication of two.

也许你知道的,还有另外一种组织方式,我们可以四拍一组,但是不论出于什么动机或者目的,这其中的区别甚微,四拍就是两拍的简单相乘

耶鲁公开课 - 聆听音乐课程节选

If I have three, I have 16 x 4 or 64 possible choices, way more than enough.

那如果是三个碱基一组,那就有16x4种,六十四种组合,那就足够了

耶鲁公开课 - 生物医学工程探索课程节选