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1·RESULTS the content of mint oil in vacuum pack is much higher than the other.

结果真空包装的薄荷挥发油含量较普通包装高。

2·CONCLUSION the vacuum pack is propitious to the mint quality, which is one of prefer method to conserve mint oil.

结论真空包装更有利于薄荷贮存质量稳定性，是一种较好的保质贮藏方式。

3·While Roomba is already the world's best-selling vacuum cleaning robot, we continue to make improvements to ensure it is the best on the market and stays at the head of the pack.

尽管Room ba已成为全球最畅销的真空吸尘机器人，我们继续改进以确保它是市场上最好的产品，并保持领先地位。