Warning: file_put_contents(/www/wwwroot/ppbbu/4cd.cn/cache/b6c789d786ec468f1345301b0ef54535.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/4cd.cn/index.php on line 55 pollution-free例句_pollution-free英汉例句_pollution-free双解例句_沉淀汉英词典
Respirators should only be removed when the wearer is in an area that is considered free of airborne hazards, including confirmed or suspected influenza patients. 呼吸防护口罩只能在无污染的环境中，包括无确诊或疑似流感病人的环境中摘除。