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ion pump

n.
1.a vacuum pump that removes gas by ionizing the atoms or molecules and adsorbing them on a metal surface

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Word of the Day

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    Idiom of the Day

    take on (something) or take (something) on
    to begin to do something, to commit oneself to something
    Recently, my father has begun to take on too many things at work and he has become very tired. I took on the extra work to make some more money.



    1.
    They live ________ the country

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