a piece of equipment that fits over someone's mouth and nose to provide them with oxygen
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary."
sábado, 2 de febrero de 2013
oxygen mask - Definition from Longman English Dictionary Online
oxygen mask - Definition from Longman English Dictionary Online: "oxygen mask [countable]
a piece of equipment that fits over someone's mouth and nose to provide them with oxygen
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary."
a piece of equipment that fits over someone's mouth and nose to provide them with oxygen
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary."
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