If the respirator becomes damaged, soiled, or breathing becomes difficult, replace the respirator.

当呼吸防护口罩损坏、被玷污，或感觉呼吸困难时，请更换呼吸防护口罩。

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If the respirator becomes damaged, soiled, or breathing becomes difficult, replace the respirator.

当呼吸防护口罩损坏、被玷污，或感觉呼吸困难时，请更换呼吸防护口罩。

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