noun
a rucksack
（箱形）背包
■a load or piece of equipment carried on a person's back
背负在背上使用的装置
verb
[no obj.][usu. as noun backpacking]travel or hike carrying one's belongings in a rucksack
背着背包旅行，漂游
a week's backpacking in the Pyrenees.
背着背包在比利牛斯山脉旅行一周。