For the moment, the suggestion is that those who test negative should get a second opinion.

目前，对那些被检测为成阴性的女性的建议是她们应该进行第二意见咨询。

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Meteorological and laboratory areas, such as gauge or weight measurement must also test negative pressure, vacuum and so on.

气象及实验室等领域进行表压或绝压得测量，也可测负压，真空度等。

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Mikovits says if all the samples in these studies test negative, including in her own lab, the day could come when she changes her mind.

Mikovits说，如果这些实验中所有的样品，包括她自己实验室的那些，检测结果真的全部为阴性的话，她将会改变自己的看法。

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The U.S. Environmental Protection Agency's drinking-water regulations require that all samples test negative for E.coli.

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Those who test negative for a serious and costly disease may drop coverage, while those who test positive may add or increase coverage.

ECONOMIST: Genetics, medicine and insurance

If you test negative for this potentially serious condition, then you can begin a trial to see just how gluten-sensitive you are, if at all.

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