例句與造句

1. Most of the ac systems in the fehd public markets are equipped with disinfection units and filters to disinfect and remove particulate matters , dust and odour from the recirculated air
   （二）食環(huán)署轄下公眾街市的空調(diào)系統(tǒng)大都設(shè)有空氣凈化系統(tǒng)和過(guò)濾器，為循環(huán)的空氣消毒、清除懸浮粒子、塵埃和臭味。
2. It's difficult to find recirculated air in a sentence. 用recirculated air造句挺難的