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单词	anion exchange
释义	anion exchange noun : a chemical process in which anions are exchanged or removed: a : ion exchange in which one anion (as chloride or hydroxide) is substituted for one or more other anions (as sulfate) b : a process in which anions in the form of acids are adsorbed by a basic substance Word History First Known Use 1931, in the meaning defined above
随便看	lunatic lunatic fringe lunatically lunatics lunation lunations lunatum lunch lunch box lunch break lunch cart lunch counter lunch counters lunch hour lunch meat lunch time lunch wagon lunch-bucket lunchboxes lunched luncheon luncheon bar luncheon meat luncheoned luncheonette

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