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superoxide anion

n.
1.the univalent anion O2-

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    Idiom of the Day

    laugh all the way to the bank
    to make money in a way that other people think is impossible
    I was laughing all the way to the bank with the money that I made from selling drinks at the sports stadium.



    1.
    Choose an idiom to replace the expression in the brackets:
    I met my friend at the party but he was not very friendly and (did not speak to me).

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