self-interest
noun [ U ] uk/ˌselfˈɪn.tər.est/ us/ˌselfˈɪn.t̬ɚ.est/
私利;利己
the act of considering the advantage to yourself when making decisions, and deciding to do what is best for you
The company's donation was surely motivated by self-interest, as it attracted a lot of media attention. 公司的捐款一定是受到了私利的驱使，因为吸引了很多媒体的关注。