名词短语
中文翻译：真空保存
同义词：
['vacuum preservation', 'vacuum storage', 'vacuum conservation']
例句：
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1. The vacuumpreservation method is used to preserve the freshness of food.
真空保存方法用于保持食物的新鲜度。
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2.In the vacuum preservation process, air is removed from the packaging material.
在真空保存过程中，从包装材料中移除空气。
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3.The vacuum preservation technique has been widely used in the food industry.
真空保存技术在食品工业中得到了广泛应用。