n.自我；自負；自尊心

We can't transcend the limitations of the ego. 我們無法超越自我的局限性。

Mind consists of three parts: id, ego and superego. 人的思想意識由三部分構成:以德,自我和超我。

He has the biggest ego of anyone I've ever met. 他是我所見的最自負的人。

That failure was a blow to my ego. 那項失敗是對我自尊心的一個打擊。

Losing the match make quite a dent in his ego. 比賽失敗對他的自尊心打擊極大。