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Meaning of Douglas bag | Babel Free

Noun CEFR B2

Definitions

An inflatable bag with a breathing tube attached to collect and analyse the air leaving a person's lungs.

CEFR level

B2
Upper Intermediate
This word is part of the CEFR B2 vocabulary — upper intermediate level.
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See also

Douglas berry Douglas City Douglas County Douglas fir Douglas Park Douglas Reef

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