Especially the carpet of the doorway, shoe of family person dress above walk to walk, the mould that sole touchs and pollen make it becomes a not small allergic agency.

• 尤其门口的地毯，全家人穿着鞋在上面踩来踩去，鞋底沾到的霉菌和花粉就使它变成一个不小的过敏媒介。