名词
中文翻译：保留缺口
同义词：
['gap in retention', 'retention gap']
例句：
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1. Thecompany's retention gap is a majorconcern for the management team.
该公司的留存差距是管理层的一个主要担忧。
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2. The researchshows that there is a significant retention gapbetween urban and rural areas.
研究表明，城乡之间存在显著的留存差距。
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3. To addressthis gap, the government has introduced severalpolicies to improve education quality.
为了解决这个问题，政府已经推出了几项政策来提高教育质量。