1.Gary Becker analyzed behaviors that don't seem to be the product of narrow self-interest, like having children and behaving altruistically.
加里·贝克尔（GaryBecker）对像生儿育女和利他行为等那些似乎并非出于狭隘的自身利益的行为进行研究分析。
2.Ifone performs an act beneficial to others with a view to gaining some personal benefit, then it is not an altruistically motivated act.
如果执行的行为有利于他人，以期获得一些个人利益，那么这不是一个无私的动机采取行动。
3.However, humans also punish altruistically, in which the act of punishing is personally costly.
然而，人类也惩罚无私，在这种行为的惩罚是亲自昂贵。
4.I doubt that we are altruistically concerned for our peers' wellbeing.
我并不相信我们真是无私的关心着他人的健康。
5.People who donate time or money to charity, or who altruistically assist people in need, report improvements in their own happiness.
无论是向慈善机构捐献金钱或者贡献自己的时间，还是去无私的帮助那些需要帮助的人，报告显示他们的幸福感都有所提高。