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	oppignorating oppilate oppilated oppilates oppilating oppilation oppilations oppilative oppo oppo dump oppo research oppo researchers oppone opponencies opponency opponent opponents opportune opportunely opportuneness opportunenesses opportunism opportunisms opportunist opportunistic

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