retentionKK [riˋtɛnʃən] /ɹiˈtɛnʃən/发音名词1保留、保有、留存The new policy limits the retention of customer data to two years.新政策规定顾客资料最多只能保留两年。2留住、留任率、留客率商业Better pay and training have improved staff retention at the hospital.更好的薪资与训练提升了这家医院的员工留任率。3记忆力、记忆Taking notes by hand improves retention of new material.用手写笔记有助于提升对新教材的记忆。4滞留、积聚医学Too much salt can cause water retention in your legs.盐分摄取过多可能造成双腿水分滞留。用这个字练口说→