They had to travel everywhere by bus.他们只得乘公共汽车出行。Shall we walk or go by bus ?我们步行呢，还是坐公共汽车？It is possible to get there by bus.可以乘公共汽车到那里。...

adv.坐公车...

by bus的音标：by bus的英式发音音标为：[bai bʌs]by bus的美式发音音标为：[baɪ bʌs]...