| 单词 | retention | 
| 释义 | retentionnoun  re·ten·tion  ri-ˈten(t)-shən  1  a    : the act of retaining : the state of being retained    b    : abnormal retaining of a fluid or secretion in a body cavity   2  a    : power of retaining : retentiveness    b    : an ability to retain things in mind    specifically : a preservation of the aftereffects of experience and learning that makes recall or recognition possible  3   : something retained   retention nounas in maintenancethe act of keeping something or someone The company's rate of employee retention is 80 percent. Synonyms & Similar Words Relevance 
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