pollution-free的用法和樣例：
例句
- 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.
呼吸防護口罩只能在無(wú)污染的環(huán)境中，包括無(wú)確診或疑似流感病人的環(huán)境中摘除。
詞匯搭配
- pollution-free fuel 無(wú)污染燃料
- pollution free technology 無(wú)污染工藝
- pollution-free energy 無(wú)污染能源
- pollution-free engine 無(wú)污染發(fā)動(dòng)機...
