retentionKK [riˋtɛnʃən] /ɹiˈtɛnʃən/發音名詞1保留、保有、留存The new policy limits the retention of customer data to two years.新政策規定顧客資料最多只能保留兩年。2留住、留任率、留客率商業Better pay and training have improved staff retention at the hospital.更好的薪資與訓練提升了這家醫院的員工留任率。3記憶力、記憶Taking notes by hand improves retention of new material.用手寫筆記有助於提升對新教材的記憶。4滯留、積聚醫學Too much salt can cause water retention in your legs.鹽分攝取過多可能造成雙腿水分滯留。