"There are two sets of issues," "One relating to the numbers of warheads and launchers that each side would be allowed under the treaty there are some differences between the two sides.

VOA: standard.2009.12.07

There are two aspects of it. Thus far, the problem sets have mostly focused on function.

关于这个问题有两个方面，迄今，问题集只关注了方法。

麻省理工公开课 - 计算机科学及编程导论课程节选

so you can see that there is going to be two sets in antibonding, three sets in bonding for a net of one, giving us the single bond.

因此你能看到,反键轨道上有两组，三组成键，得到一组净成键，所以成的是单键。

麻省理工公开课 - 固态化学导论课程节选

One can see the amalgam of these two sets of ideas in his work.

读者可以在他们作品中看到两种思想的结合。

耶鲁公开课 - 文学理论导论课程节选

What happens during mitosis is that the cell is able to separate this double set of chromosomes into two sets and that happens in a way that's shown in this cartoon here.

当细胞有丝分裂时,细胞将其分开形成两组染色体,如下图所示

耶鲁公开课 - 生物医学工程探索课程节选