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    unventilated

    US

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    UK

    A1
    adj.AdjectiveNot ventilated

    Video subtitles

    How Classrooms Slow Your Brain Down

    03:06How Classrooms Slow Your Brain Down
    • The longer we stay in an unventilated space, especially with multiple people, the higher the concentration of carbon dioxide in the atmosphere.

      The longer we stay in an unventilated space, especially with multiple people, the higher the concentration of carbon dioxide in the atmosphere.

    B1