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res.pi.ra.torHres7pI7reI7tE5, $-tLn [C]A respirator is artificial breathing equipment.人工呼吸器Her lungs were so weak that she couldn't breathe without a respirator.她的肺部如此虚弱，没有人工呼吸器就无法呼吸。Doctors put the patient on a respirator.医生给病人使用人工呼吸器。A respirator is also a device worn over the mouth and nose to prevent harmful substances from being breathed in.防毒面具The fire fighter was wearing a respirator to help him breathe in the smoke-filled house.消防员戴着一个防毒面具，来帮助他在烟气缭绕的房子中呼吸。
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