If you say that someone is selfless, you approve of them because they care about other people more than themselves.
例句
She was a wonderful companion and her generosity to me was entirely selfless...她是一個(gè)極好的伴侶，她對我慷慨大方，一心只為我著想。Perhaps the only all-enduring and selfless love was that of a mother for her child.或許唯一持久無私的愛就是母愛。
英英詞典釋義
Adverb
1. in an altruistic manner;
"he acted selflessly when he helped the old lady in distress"