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他们想在有风的日子阻止沙子，并使空气清洁。
They want to stop the sand on windy days and make the air clean.
youdao
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由内而外的呼吸过滤器呼吸孔关闭，使空气清洁和干燥。
From the inside Breath hole closed by Breath filter to make air clean and dry.
youdao
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由内而外的呼吸过滤器呼吸孔关闭，使空气清洁和干燥。
From the inside Breath hole closed by Breath filter to make air clean and dry.
youdao