And in 2005, we had a class that didn't trust each other at all I guess, because the average was twenty-three.

在2005年,我想有这个班的同学并不互相信任,因为平均值是23

耶鲁公开课 - 博弈论课程节选

It is pretty simple: they don't trust each other to complete their respective sides of the bargain.

BBC: Why BP's Russian deal collapsed - and how it might be rescued

And it's the kind of place where the neighbors don't necessarily trust each other.

NPR: 17 min 50 sec

Like Mozart's opera, it involves a double love story, in which two happy couples don't necessarily trust each other.

NPR: Love and Anchovies: Catan's 'Salsipuedes'