单词	oxygen mask
释义	oxygen mask ˈoxygen ˌmask noun [C] ► F0 a piece of equipment that can be put over a person's nose and mouth to supply them with oxygenSee picture: oxygen mask     Thesaurus+: ↑Medical and surgical equipment
随便看	biology biomass biome biometric bionic biophysics biopic biopsy biorhythm bioscience biosecurity biosphere biotechnology bioterrorism bioterrorist biotic bipartisan biped bipedal biplane bipolar bipolar disorder biracial birch bird

英语词典包含67674条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。