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respiratory quotient

n.
1.the ratio of the volume of carbon dioxide expired to the volume of oxygen consumed by an organism or cell in a given period of time

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    Idiom of the Day

    press one's luck
    to depend too much on luck, to expect to continue to be lucky
    My uncle is pressing his luck if he thinks that he will continue to make a lot of money on the stock market.



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    I can't ________ you properly- the phone line's really bad.

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