We can also say that once most people have been infected by swine flu and become immune, a variant that can beat that immunity will replace the current strain.

我们还可以确定的是，一旦大部分人群感染猪流感并获得免疫力，疾病的变种将会打破目前的免疫性并成为当下的压力。

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Thee water level in deep well can reflect variant stress-strain variations which are caused by tidal dilatation, air-pressure, seismic waves and so. on.

深井水位能够反映地球固体潮体应变、气压变化、地震波等多种应力应变变化。

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Computed examples show that this model can duplicate variant stress-strain behaviors by adjusting its parameters.

多个算例结果表明，调整二元介质模型的参数，可以描述多种类型的。

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Now, according to a study published in the Annals of Internal Medicine, a new variant of the strain is resistant to even more antibiotics and it's spreading among gay and bisexual populations in San Francisco, Boston, New York and Los Angeles.

NPR: Tracking a New Strain of Drug-Resistant Staph

Some doctors paint a scary worst-case scenario: A flu pandemic breaks out and beats down the immune systems of millions of people, and then staphylococci--the hospital strain and the nastier variant in the community--run wild on a killing spree.

FORBES: Germ Warfare