by train on train

by train on train by( )train take( )train by train 和on a train 是什么短语 train take the train=by train=( )the train 括号里填一个介词 in on 还是填什么 go by train by train 啥意思 作文 traveling by train on foot by bike by bus by train by plane by ship by subway 怎 by plane by ship on foot by bike by bus by train by subway 怎 by Plane/by train by car/by bus/by taxi/on foot b in the train和on the train