egomania
US /ˌiː.ɡoʊˈmeɪ.ni.ə/
UK /ˌiː.ɡoʊˈmeɪ.ni.ə/

1.
自我陶醉, 极端自我中心
an obsessive preoccupation with oneself; extreme egocentrism.
:
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His unchecked egomania led to the downfall of his company.
他 unchecked 的自我陶醉导致了他的公司倒闭。
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The dictator's egomania knew no bounds, leading to widespread suffering.
独裁者的自我陶醉没有止境,导致了广泛的苦难。