联系的乐趣似乎具有感染力。

The pleasure of connection seems contagious.

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这项研究被认为，首先要确定烟草使用和结核病的感染和死亡率之间的直接联系。

The study is described as the first to identify a direct link between tobacco use and rates of TB infection and death.

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迄今为止，尚未发现少数感染变异病毒的患者之间有任何联系，变异病毒似未传播开来。

To date, no links between the small number of patients infected with the mutated virus have been found and the mutation does not appear to spread.

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