Běi / jīng / de / dì / xià / tiě / dào / fēi / cháng / fāng / biàn / xiàn / lù / fù / gài / quán / shì / gè / gè / jiǎo / luò

北京的地下铁道非常方便，线路覆盖全市各个角落。

Beijing's subway is very convenient, with lines covering every corner of the city.