without feeling the same moral responsibility. This analysis has explained

而不用承受相同的道德责任这个分析解释了
why people don't always help others in need.

为什么通常人们不会帮助有需要的人
If there's a group, responsibility to help decreases

若身处一个团体援助的责任就减少了
and this is captured in different ways

这以不同方式来实现
but the main idea is we all think someone else will help so we don't.

但最主要是我们都觉得别人会帮忙所以我们就不插手了
There's a diffusion. This just summarizes some studies--

这其中有个扩散作用这里总结了一些研究实验
some famous studies supporting this. And the classic example,

一些很有名的研究都证明了这一点一个经典例子
which is discussed in detail in the textbook, is the Kitty Genovese case

书上有详细讨论就是凯蒂·吉诺维斯案子
where somebody was murdered in the common lot

她在一个公寓环绕的
that apartment buildings surrounded while dozens of people watched,

公共停车场中被谋杀许多人目睹了
dozens of good, normal people watched and did nothing.

许多善良正常的人看见了却什么都没做
If there's some advice I've heard on this, which is pretty good advice:

如果我听说过什么关于此的忠告就是这么一个好的忠告