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1. Vacuum extraction is a method used to remove impurities from oil.
真空提取是一种用于从油中去除杂质的方法。
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2. The process of vacuum extraction involves pumping out the air and filling the container with the desired substance.
真空提取过程涉及排出空气并填充容器以获得所需物质。
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3. Vacuum extraction has been shown to improve the quality of certain types of food products.
研究表明，真空提取可以提高某些食品产品的质量。