名词
中文翻译：化学保存
同义词：
['chemical conservation', 'chemical preservation', 'chemical protection']
例句：
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1. The food must be preserved in a cool, dry place to prevent spoilage.
食物必须在凉爽干燥的地方保存，以防止变质。
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2. Chemical preservation is essential for the preservation of food and other materials.
化学保存对于食品和其他材料的保存至关重要。
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3. In order to preserve the environment, we need to reduce our use of chemicals.
为了保护环境，我们需要减少使用化学物质。