Not all of them were acting out of self-interest.
他们当中，并非所有人的行动都是出于利己的目的。
牛津词典
Their current protests are motivated purely by self-interest.
他们当前的抗议完全是受一己之利驱使的。
Committing your life to creating value is in your own immediate and direct self – interest.
驱使你的生命去创造以你自己为中心的所想立即与直接获取的价值.
期刊摘选
Unlike the trust model, it channels both self interest and altruism to serve the public good.
和信任模式不同,这个模式引导了自己兴趣和利他主义去服务公共物品.
期刊摘选
