(psychology 心) individual's perception or experience of himself, esp in relation to other people or to the outside world; part of the mind that can think, feel and act 自我. Cf 参看 id, super-ego. 
(infml 口) self-esteem 自尊; 自负: Losing the match made quite a dent in his ego. 比赛失败对他的自尊心打击极大.# `ego-trip n (sl 俚) self-centred activity 以自我为中心的活动: (derog 贬) Her life is just one big ego-trip. 她一生都是以自我为中心.