If you describe someone as unbalanced, you mean that they appear disturbed and upset or they seem to be slightly mad.
例句
I knew how unbalanced Paula had been since my uncle Peter died...我知道葆拉自從我叔叔彼得去世后情緒一直很不穩定。He was shown to be mentally unbalanced.他被證明精神有問題。
ADJ-GRADED
不公正的；偏頗的；片面的
If you describe something such as a report or argument as unbalanced, you think that it is unfair or inaccurate because it emphasizes some things and ignores others.
例句
UN officials argued that the report was unbalanced.聯合國官員指出那份報告有失公允。...unbalanced and unfair reporting.片面、不公正的報道
英漢詞典釋義
adj.
不平衡的;不穩定的;不均衡的
精神錯亂的
The murderer was completely unbalanced.那個殺人犯完全是喪心病狂。