Scientists found the tropicalis genome contains more than one-point-seven-billion chemical bases along ten pairs of chromosomes.

VOA: special.2010.06.29

This is one of these pairs that I have shown up here.

这是其中的一对，我已经给你们展示过了。

麻省理工公开课 - 固态化学导论课程节选

I have more than one hundred pairs of shoes.

我有100多双鞋。

How many实战 - SpeakingMax英语口语达人

If I can prove that it is greater than one that means that the line is more stable than the set of ion pairs.

如果我可以证明它大于,这就表明,这一line要比这一系列离子更稳定。

麻省理工公开课 - 固态化学导论课程节选

If I'm talking about two DNA strands and they differ only in one or two base pairs they won't be exact complements and they won't form this double helix.

假设有两条DNA单链,有一两个碱基不能配对,它们就不能完全互补,也无法形成双螺旋形结构

耶鲁公开课 - 生物医学工程探索课程节选