回来的路上用英语怎么说？

On the way back, in English, we say "on the way back". It is a simple and straightforward translation. "On the way back" can be used in many contexts, whether you are referring to a physical journey or a metaphorical one. It implies that you are going back to a place or situation that you were previously in. For example, if you are talking about returning home from a trip, you can say "I met some interesting people on the way back." The phrase can also be used figuratively, such as when you are discussing a project and referring to revisiting previous steps or ideas. Overall, "on the way back" is a versatile and commonly used phrase in English.