You'd be better going by bus.
你坐公共汽車去會更好些。
He goes to work by bus.
他乘公共汽車去上班。
They had to travel everywhere by bus.
他們只得乘公共汽車出行。
They criss-crossed the country by bus
他們乘公共汽車游歷這個國家。
It's cheaper by bus, but the train is a lot quicker, so it's as broad as it's long.
乘公共汽車便宜，但坐火車快得多，所以各有優(yōu)點。