名词短语
中文翻译：食物的保留时间同义词
同义词：
['food retention', 'dietary retention']
例句：
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1. The study found that the retention of food in the stomach is crucial for digestion.
研究发现，胃中食物的保留对消化至关重要。
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2. The elderly often have a longer retention of food than younger people.
老年人往往有更长的食物保留时间。
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3. The researcher analyzed the retention of food in the human body and its impact on health.
研究者分析了食物在人体中的保留及其对健康的影响。