他们当中，并非所有人的行动都是出于利己的目的。Not all of them were acting out of self-interest.他的性格带有利己的缺点.His character is tainted by self - seeking.身体最重要的部位不是利己的部位.The most important boby part is not a selfish one....

“利己的”的英语可以翻译为：hoggish ...