【微信公众平台】搜索“英语口语每天学”，每日获取笨老撕不一样的分享。 【新浪微博】搜索“笨老撕”smog 雾霾mask 口罩、面膜A mask is an object normally worn on the face, typically for protection, disguise（伪装）, performance, or entertainment.gas mask 防毒面具oxygen mask 氧气面罩air purifier /ˈpjʊrɪfaɪər/ 空气净化器An air purifier is a device which removes pollution from the air in a room. fire extinguisher 灭火器/ɪkˈstɪŋɡwɪʃər/
