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| NOUN |
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| /rɪˈtenʃn/ |
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| 1 | formal the ability to keep workers or customers from leaving a company , or students from leaving a school 保留；留住 | There is a recruitment and retention crisis in the teaching profession. 教师这一行存在聘人和留人的危机。 | |
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| 2 | formal the act of keeping or storing something 保存；存放 | +of This facility will be used for the retention of hazardous waste. 这处设施用于存放危险性的废料。 | |
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| 3 | medical a situation in which harmful substances stay in the body instead of passing out of it （有害物质在体内的）停滞，潴留 | She still has serious fluid retention in the limbs and lungs. 她的四肢和肺部仍有严重的液体滞留。 | |
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| 4 | the ability to remember ideas or facts 记忆力 | +of The patient showed good retention of facts and figures. 这个病人对事情和数字有很好的记性。 | |
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