每个人都很开心，特别是，当看起来似乎个人财富的增加非常容易，即不用牺牲之前的储蓄，也不需要诚实、辛苦的努力工作。

Everyone is happy, especially because it appears it would be possible to increase one's wealth very easily without any sacrifice in the form of prior saving and honest, hard, individual work.

youdao

这些伟大的男人和女人们所做出的牺牲使我非常感动。

The sacrifices these great men and women give for us is impressive!

youdao

这就非常幸运了，一般来说，是要有所牺牲的。

Here we were very lucky.In general, there is maybe a trade off.

youdao

From the standpoint of your genes, you dying for the life of three brothers is an excellent compromise 50% because the genes replicate by fifty percent more.

从你自身基因的角度看，你为了三个兄弟牺牲自己,是非常好的折中,因为基因复制超过。

耶鲁公开课 - 心理学导论课程节选