名词短语中文翻译
中文翻译：活动保留
同义词：
['activity retention', 'activity retention rate']
例句：
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1. The company's policy on employee training is to retain the most active employees.
该公司对员工培训的政策是保留最活跃的员工。
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2.The research shows that the retention of activity is crucial for a successful project.
研究表明，活动保留对于项目的成功至关重要。
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3. The study found that the retention of activity was positively correlated with the quality of the product.
研究发现，活动保留与产品质量呈正相关。