单词	house dust
释义	house dust noun : an airborne respiratory allergen of uncertain origin found about houses and held to be the chief cause of nonseasonal hay fever Word History First Known Use 1830, in the meaning defined above
随便看	mid-wall shaft mid-water mid-world midafternoon midafternoons midair midairer midairest midairrer midairrest midairs Midas midas fly Midas touch Midas's-ear midas's-ears midases midasses midbrain midbrains midcentury modern midcourse midcourses midcult midcults

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