That's due to the asymmetry of the nucleotide, that there's a 5' and a 3' end and the way that they're linked together.

这是由于核苷酸的非对称性造成的,这里是5'端和3'端,这就是它们连接在一起的方式

耶鲁公开课 - 生物医学工程探索课程节选

You know that these molecules are also linked in another way, by the phosphate bonds that connect the 3 and the 5 carbons of adjacent nucleotides.

这些分子还通过别的方式连接在一起,例如通过相邻核苷酸的3碳位和,5碳位之间的磷酸键相连

耶鲁公开课 - 生物医学工程探索课程节选

They're not connected to each other in the right way.

他们之间的连接方式出了问题

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You don't need to say anything more about the phosphate because they all have the phosphate and every set of these is hooked together in the same way.

不需要再进一步说明磷酸基,因为两种核酸都含有磷酸基,并且以同样的方式相互连接

耶鲁公开课 - 生物医学工程探索课程节选

Although we need to offer a story about what makes the parts work when they're connected with each other and interacting in the right way, there's no need to appeal to anything beyond the physical.

尽管我们还需要探讨,是什么因素,使得各部分在正确的连接方式下,可以正常工作,但无需诉诸于物质之外的事物

耶鲁公开课 - 死亡课程节选

That there are two colors per strut, so what's linking the two backbones together are two colored segments that come from the outside towards the middle, and that the colors occur only in certain combinations, red and green, yellow and blue, that's all you see.

每个梯阶有两个颜色,主链是由,两种不同颜色的片段由外向内连接起来的,这些颜色仅以某种特定方式配对,红连接绿,黄连接蓝,大家都能看到

耶鲁公开课 - 生物医学工程探索课程节选

Now if you read in the book, you read about where this figure is shown in the book, you can understand more about why these structures line up in the right way so that the right molecular elements are together to form hydrogen bonding pairs between them.

如果你预习过课本,课本中有关于这些详细的描述,你可以更深刻的理解,为什么这些结构是采用这种连接方式,以使对应的分子部分靠近,并形成氢键连接

耶鲁公开课 - 生物医学工程探索课程节选