un- Qn- combining form used to add the meaning 'not', 'lacking'or 'the opposite of'before adjectives, adverbs, verbs and nouns (置于形容词副词动词名词前表示)“不”,“非”,“相反”,“对立”,“做相反的动作”,“无” unrealistic 不现实的 unhappily 不幸福的 unscrew 卸下/拧松(螺丝等) unfairness 不公正,不公平 Opposites