re.ten.tion
n.（名词）
The act of retaining.保持：保持的行为The condition of being retained.保留，滞留：被保持的状态Capacity or power of retaining.保持力，持续力An ability to recall or recognize what has been learned or experienced; memory.记忆力：记起或认识出已经学过或经历过的事物的能力；记忆力Something retained.被保持物Medicine Involuntary withholding of wastes or secretions that are normally eliminated.【医学】 停滞：正常情况下应被除去的废物或分泌物的不自觉的保留
来源：Middle English retencioun 中古英语 retencioun from Old French retention 源自 古法语 retention from Latin retentiô retentiôn- 源自 拉丁语 retentiô retentiôn- from retentus [past participle of] retinôre [to retain] * see retain 源自 retentus [] retinôre的过去分词 [保持] *参见 retain
