All of these from the group one and two through the group five and six elements, but what about elements, what about molecules like hydrogen, or nitrogen, or maybe oxygen?

所有的这些都是来自于第一主族和第二组主族，到第五主族和第六组主族的悬殊，那么元素呢，比如氢气，氮气或氧气那样的分子呢？

youdao

Over the next five years, the group helps the students get into other elite summer math programs, high-performing high schools, and eventually college.

在接下来的五年里，该组织帮助学生进入其他精英夏季数学课程、高水平的高中，并最终进入大学。

youdao

Ranking schools is always controversial, and this year a group of 38 superintendents from five states wrote to ask that their schools be excluded from the calculation.

学校排名一直存在争议，今年来自五个州的38名主管写信要求将他们的学校排除在排名范围之外。

youdao

But it was not a joke. NASA found seven normal, everyday supermen in a group of five hundred candidates.

VOA: special.2009.06.10

All of these from the group one and two through the group five and six elements, but what about elements, what about molecules like hydrogen, or nitrogen, or maybe oxygen?

所有的这些都是来自于第一主族和第二组主族,到第五主族和第六组主族的悬殊，那么元素呢，比如氢气，氮气或氧气那样的分子呢？

麻省理工公开课 - 固态化学导论课程节选

Well, a cross-sectional study would mean that you'd get a random group of the population and measure them in 1970 and then take another random group five years later and measure them, but it wouldn't be the same people necessarily, it would be different groups of people.

那么,横断面研究就是,1970年你在人群中随意选择一组人,并记录下相关数据,然后,五年后再随意选择一组人记录数据,但这不需要是同一组人,通常是不同的人

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

However, Group Three - and to a lesser extent Group Five - provide the Scots with most hope.

BBC: Results could ease Scots' passage

Morocco, who are two points behind leaders Guinea, are second in Group Five.

BBC: This camp is a golden chance for promising players

Meanwhile in Group Five , Kenya finally kicked off their qualifying campaign with a sensational 3-2 win over Malawi .

BBC: Bwalya triumphs for Zambia