The idea that there is a group of people that are "my" friends and another group that is "her" friends can be a big dividing factor between us.

这个想法出现是因为，我有一群“我”的朋友，她有一群“她”的朋友，而这种形式使得我们之间有了很多区分因素。

youdao

Petty ego doesn't insist on its own idea while complies with the common standards around which are taken as codes of their conduct. By this way, a big mountain, a river, a group is formed.

一个小单位它遵守周遭环境的共同标准，以作为它的行为准则，这样就能形成一座大山，一条江河，一个团体。

youdao

Three days later, Feiler awoke before dawn with a big idea: he would assemble a group of trusted men to serve as surrogate fathers after his death.

VOA: standard.2010.06.19

It got 8, 300 submissions, says Michael Collins, boss of the Big Idea Group, a start-up firm that helped Staples to organise its competition.

ECONOMIST: The future of innovation