One possible reason is that dust can affect the breathing system and people may be more open to infection.

原因之一可能是尘埃会影响呼吸系统以及人们的户外活动多，因而感染病毒。

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One possible reason is that dust can affect the breathing system and people may be more open to infection.

其中一个可能的原因是灰尘能够影响呼吸系统，人们更易受到感染。

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OBJECTIVE To improve the quality of dust alleviation work, cut off transmission routes, and prevent nosocomial infection effectively.

目的提高保洁工作质量，切断传播途径，有效地预防医院感染。

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Mice who ate the dog dust were protected against RSV infection symptoms, like inflamed, mucus-coated airways, suggesting exposure helped them stave off the virus.

吸进灰尘的老鼠可以防止呼吸道合胞体病毒的危害，不会出现如下症状：发炎红肿、呼吸道充满了粘液。暗示着暴露在空气中可以帮助他们避免病毒的危害。

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Mice who ate the dog dust were protected against RSV infection symptoms, like inflamed, mucus-coated airways, suggesting exposure helped them stave off the virus.

吸进灰尘的老鼠可以防止呼吸道合胞体病毒的危害，不会出现如下症状：发炎红肿、呼吸道充满了粘液。暗示着暴露在空气中可以帮助他们避免病毒的危害。

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