“一路上”的英语可以翻译为：all the way ...

一路上，汽船在好几个港口停靠。The steamer calls at several ports along the way.我们的旅客一路上的行为让人很难解释。Our traveller'sbehaviour on the journey is hard to explain.我们开着车去了那里，一路上开得很慢。We got there by driving slow all the way....