• Perhaps they were wearing masks?

    或许他们面具

    youdao

  • Worse, protective measures like wearing face masks barely help because the particles are too small.

    石远凯说,“糟糕的是,因为颗粒太小,口罩这样的保护性措施几乎不会起到什么作用。”

    youdao

  • Worse, protective measures like wearing face masks barely help because the particles are too small.

    石远凯说,“糟糕的是,因为颗粒太小,口罩这样的保护性措施几乎不会起到什么作用。”

    youdao

$firstVoiceSent
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