They criss-crossed the country by bus.

他们乘坐公共汽车在乡间交叉往返。

《柯林斯英汉双解大词典》

You'd be better going by bus.

你坐公共汽车去会更好些。

《牛津词典》

Shall we walk or go by bus ?

我们步行呢，还是坐公共汽车？

《牛津词典》

If you travel by bus in Sao Paulo,Brazil these days your vehicle may be powered by hydrogen fuel cells.

VOA: special.2009.09.07

so I'm going to begin by showing you a very personal look at my hometown, a bus ride.

所以我将首先展示一下,关于我家乡的一个个人视角,一次公车旅程。

麻省理工公开课 - 媒体、教育、市场课程节选

travelling round by the bus and tube is much more reasonable.

乘公交和地铁到处转就更合理了。

公共交通更方便 - SpeakingMax英语口语达人

All passengers on board the plane were transferred by bus to the airport terminal.

CNN: Heavy snow brings travel chaos to Britain

The journey by bus took one week, and we were almost caught several times.

CNN: Why I fled North Korea

Protester Alejandra Canterra(ph) traveled two hours by bus to get to the L.A. protest.

NPR: May Day Immigration Marches Lose Some Steam