you should make a plan while traveling.中 ,traveling怎么理解?

you should make a plan while traveling.中 ,traveling怎么理解? you should make a plan while traveling.中traveling怎么理解? you need to make a plan before traveling. what should you pay attention to while traveling? 《My traveling plan》 My traveling plan traveling traveling can be a lot of fun but it requires you to plan fo while traveling in Sichuan ,you can't miss ____people call " travel plan 和traveling plan哪个对? Late last night,while traveling home Do you enjoy traveling by air?选哪项填入空格中