háng kōng gōng sī / tí qián / gōng bù / háng bān / fāng biàn / lǚ kè / lì yòng / zǎo niǎo yōu huì / ān pái / xíng chéng

航空公司提前公布航班，方便旅客利用早鸟优惠安排行程。

The airline announces its flights early so that travelers can use the early bird discount to arrange their itineraries.