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carbonic acid gas

n.
1.a heavy odorless colorless gas formed during respiration and by the decomposition of organic substances

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  • Idiom of the Day

    read the handwriting on the wall
    to anticipate what is going to happen by observing small hints and clues
    Everybody in our department could read the handwriting on the wall and they knew that the company would soon close our department.



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    Children shouldn't play with ________ appliances.

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    Invention
    Invention : saddle (riding)
    Year : c. 200 bc
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