东单站是个换乘站。
Dongdan station is a transfer station .
小明：麦克，这是地铁一号线，咱们可以坐到东单站转五号线。
Xiao Ming : Mike , this is subway line one , we can take it to the Dongdan station then transfer to line five .
坐1路公共汽车，在东单站下车。
Take bus No.1 and get off at Dong Dan stop .
东单站