And for South Korea, where exports are the backbone of the economy, being well regarded abroad is all the more important.

VOA: standard.2009.11.05

That can happen but that's abnormal, but changes in maybe the chemistry of the backbone that holds the nucleotides together.

这可能发生的,但属于非正常的变化,而是改变诸如维持核苷酸序列的,主链的化学结构

耶鲁公开课 - 生物医学工程探索课程节选

This material will be necessary to do the listening exercises for the course, which is sort of the backbone of the course.

做听力练习时我们必须使用这些材料,听力训练是课程的核心内容

耶鲁公开课 - 聆听音乐课程节选

Prime Minister Michele Duvivier Pierre-Louis told the council that her government is committed to fixing Haiti's problems and creating a strong economy as its backbone.

VOA: standard.2009.09.09

One thing to notice is this part of the double helix that we'll call the backbone.

要注意的是,这两股构成双螺旋的链我们称之为主链

耶鲁公开课 - 生物医学工程探索课程节选

"When,in fact,it's going out on someone else's servers. It's going out on a backbone that can be monitored, and so,there are ways in which the law enforcement community can capture some of these communications and analyze them."

VOA: standard.2010.06.22

He is independent in a way that nobody who was not a king or an aristocrat in the past has ever been -- a new kind of man, the backbone of the polis as it emerges.

他是如此的独立以至于,前无古人后无来者,一个全新的人,它不断地发展并成为城邦制的脊梁

耶鲁公开课 - 古希腊历史简介课程节选

So what's going to form the backbone is this continual link, phosphate to sugar, phosphate to sugar, phosphate to sugar, all linked together to form one long, long molecule.

主链是由这样重复的连接构成的,从磷酸到戊糖,周而复始,所有这些连接起来构成一个长链分子

耶鲁公开课 - 生物医学工程探索课程节选

The backbone is what?

主链是什么

耶鲁公开课 - 生物医学工程探索课程节选

This represents the upright struts on a ladder that I showed you before, it represents this backbone that's shown by - that's formed by polymerizing the pentose's together through phosphate's always going 5' to 3', 5' to 3'.

线条代表梯子,上下的支柱 之前给你们演示过,代表由多聚戊糖分子,通过磷酸基从5'端向3'端方向,连接起来的主链

耶鲁公开课 - 生物医学工程探索课程节选

It's the phosphate and the pentose that make up the backbone - that make up the upright struts of the ladder and it's the bases that make up the connecting struts, so the bases are the colors.

磷酸基和戊糖,共同构成了主链,主链又构成了梯子上下的支柱,而碱基,则构成连接支柱的梯阶,碱基是用各种颜色表示的

耶鲁公开课 - 生物医学工程探索课程节选

The backbone's on the outside of the molecule like the upright struts of a ladder on the outside of a ladder.

主链位于DNA分子结构外侧,像梯子两侧上下的支柱,记住是梯子外侧

耶鲁公开课 - 生物医学工程探索课程节选

In some cases that backbone gets methylated and those regions of the DNA that are methylated get treated differently by the cell than unmethylated regions.

一些情况下,主链会甲基化,该甲基化区域的DNA,和未甲基化区域的DNA,会被细胞区别对待

耶鲁公开课 - 生物医学工程探索课程节选

Every unit in the backbone of this ladder has the same sugar unit, the same pentose; it's either RNA or DNA and has ribose or deoxyribose, so you don't need to describe the whole thing.

主链的每个单位,都由相同的糖单位构成,同样的戊糖,RNA里是核糖,DNA里是脱氧核糖,所以你不需要所有细节都描述

耶鲁公开课 - 生物医学工程探索课程节选