A type of schizophrenia, usually starting at puberty, characterized by foolish mannerisms, senseless laughter, delusions, hallucinations, and regressive behavior.
青春期痴呆一种精神分裂症, 通常始发于青春期, 其特征为举止痴呆、傻笑、妄想、幻觉以及退化的举止
He's taken on some irritating mannerisms.
他新添了些讨人嫌的怪毛病.
