To prevent attacks, use mattress covers and pillowcase covers to make a barrier between dust mites and yourself.

要避免发作，可使用床罩和枕套物理隔开尘螨和自己接触。

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The main products are: preservation of dehydrated vegetables, fruits, spices, mattress covers, Beizhao, Willow, silk flower, automobile accessories and other products.

主要产品有：保鲜脱水蔬菜、水果、调味品、床罩、被罩、柳编、绢花，汽车配件等产品。

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Plastic mattress covers help keep dander out of beds, and room air cleaners equipped with high efficiency particulate air (HEPA) filters can remove dander from the air.

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Sharpe and Simpson, who ran Ideal Mobility Solutions, mainly sold ordinary mattress covers that were claimed to have health benefits for ailments such as bad backs and stiff joints.

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Robert put his head into the covers and was sobbing into the mattress.

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