The leaders agreed to make the G20 the main group for their international economic cooperation, instead of the G8.

VOA: special.2009.09.26

If there's a group, responsibility to help decreases and this is captured in different ways but the main idea is we all think someone else will help so we don't. There's a diffusion.

如果是一群人，帮助的责任就会分散变小,这体现在多个方面,但最主要的想法就是我们都认为别人会帮助,所以我们就不帮助了，责任被分散了。

耶鲁公开课 - 心理学导论课程节选

NASCAR is the main group for stock car racing in the United States.

VOA: special.2009.04.10

Professor Wobbrock says the group's main goal is to make information and computer systems more available and easier to use.

VOA: special.2011.04.18

The group's main musician is the singer and songwriter John Darnielle.

VOA: special.2011.04.08

Election officials said the main opposition party, The Botswana National Front, won six parliamentary seats while a splinter group, the Botswana Congress Party,won five.

VOA: standard.2009.10.19

The so-called Red Shirts, led by the United Democratic Front against Dictatorship,or UDD, have the backing of the main parliamentary opposition group, the Puea Thai Party.

VOA: standard.2010.03.20

In September,a power struggle erupted in violence in the lower Juba region between al-Shabab and Hizbul Islam, a clan-based Islamist-nationalist group which had been al-Shabab's main ally in its year-long battle to overthrow the U.N.-backed government in Mogadishu.

VOA: standard.2010.01.02

This is a surprise,". The Front for Democracy Defense,or FNDD, is one of three principal parties involved in negotiating an end to the crisis, along with the military government and a third political party that formed the main opposition group before the coup.

VOA: standard.2009.03.12