而平均每床被子会有超过1,500,000只屋尘螨。
The average bed could be home to up to 1.5 million house dust mites.
结论屋尘螨和粉尘螨是北京地区重要过敏原。
Conclusion House dust and flour mites are the most common allergens in Beijing area.
结论屋尘螨和粉尘螨是北京地区重要过敏原。
Conclusion House dust and flour mites are the most common allergens in Beijing area.
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