1. May use the towel, clothes and so on to cover the oronasal, maintains the breath is unobstructed, prevents the mist and dust to choke into suffocates.
可以用毛巾、衣服等捂住口鼻，保持呼吸通畅，防止烟尘呛入窒息。
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2. May use the towel, clothes and so on to cover the oronasal, maintains the breath is unobstructed, prevents the mist and dust to choke into suffocates.
