原因之一可能是尘埃会影响呼吸系统以及人们的户外活动多，因而感染病毒。
One possible reason is that dust can affect the breathing system and people may be more open to infection.
油漆过的家私感染了尘埃，可用湿纱布包裹的茶叶渣去擦，或用冷茶水擦洗，会愈加光亮亮堂堂。
Painted furniture with dust, wet gauze tea leaves to wipe are available, and with cold water scrub, or will be more shining bright.
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