Word: 废气 (fèiqì) Traditional: 廢氣 废气 dictionary entry fèiqì exhaust gas; industrial waste gas Full dictionary entry for 废气 Example sentences using 废气 2 sentences, showing page 1 of 1. 工厂要先处理废气。 Gōngchǎng yào xiān chǔlǐ fèiqì. Factories must treat their waste gas first. 汽车废气会污染空气。 Qìchē fèiqì huì wūrǎn kōngqì. Car exhaust gas pollutes the air.