单词	aluminum trihydrate
释义	aluminum trihydrate noun : the trihydrate of alumina : aluminum hydroxide —used chiefly commercially Word History First Known Use 1878, in the meaning defined above
随便看	onboarding onc- once once again once again/more once and again once and for all once bitten, twice shy once in a blue moon once in a lifetime once in a while once more once or twice once that once upon a time once-accented octave once-born once-over once-over-lightly once-overs oncer oncers onces oncest oncet

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