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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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    an easy life of luxury, a pleasant life
    My father has been living the life of Riley since he retired from his job last year.



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    Invention
    Invention : paper
    Year : c. 105
    Inventor : ts'ai lun
    Country : china.      .. More >>
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