n.保留；记忆力，保持力；滞留，扣留；闭尿 双语释义：n.(名词)[U][S]具有，具备，享有，享用 possession or use of sth[U][S]记忆力，记性 ability to remember things[U][S]挡住，拦阻；保持，保留，容纳 action of holding sth in position or containing it英英释义： retention[ ri'tenʃən ]n.the act of retaining something同义词：keepin