Stafford was from the second group of American astronauts.

VOA: special.2009.06.24

A second implicit purpose for the youngster-aged group is a baby-sitting purpose.

对青少年群体来说,第二个深层目标,充当临时保姆。

麻省理工公开课 - 媒体、教育、市场课程节选

The second case study of moral feeling is "in-group" and "out-group."

第二个道德情感的案例分析,是“内群体”与“外群体”

耶鲁公开课 - 心理学导论课程节选

Finally,late on the second day, the final group of soldiers passed the White House.

VOA: special.2010.01.14

The second thing that he found was this group, they were always asking questions, -always asking questions, initially of their boss, later of their employees, of their partners, children, parents, friends.

他发现的第二件事是，这部分人，一直在问问题，一直问问题，最初是问他们的老板，后来是问他们的雇员，他们的搭档，孩子，父母，朋友。

哈佛公开课 - 幸福课课程节选

And,it is the second genome for a member of the Carnivora group, after dogs.

VOA: special.2010.01.19

The top two teams in each group move on to the second stage.

VOA: special.2010.06.09

Neighbors were the second most affected group.

VOA: special.2009.12.22

The second exercised and the third group worked out less than half an hour daily.

VOA: standard.2010.03.30

The fate of the second French hostage, who was being held by al-Shabab, an al-Qaida-linked militant group allied with Hisbul Islam, is not immediately clear.

VOA: standard.2009.08.26