| 释义 | 
		re·ten·tion AHD[rĭ-tĕnʹshən] D.J.[rɪˈtenʃən]K.K.[rɪˈtɛnʃən]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
 
 
 - Middle English retencioun 中古英语 retencioun 
 
 - from Old French retention 源自 古法语 retention 
 
 - from Latin retentiō  retentiōn- 源自 拉丁语 retentiō  retentiōn- 
 
 - from retentus [past participle of] retinēre [to retain] * see  retain 源自 retentus   retinēre的过去分词 [保持] * 参见 retain
 
 
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