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	twibill twibills twibils twice twice a day twice a year twice over twice yearly twice-accented octave twice-born twice-laid twice-stabbed ladybird twice-told twicer twicers twicest twicet twichild Twickenham twiddle twiddle (with) twiddle one's thumbs twiddle with twiddle-twaddle twiddled

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