Noun:a bag carried by a strap on your back or shoulderVerb:hike with a backpack;
"Every summer they are backpacking in the Rockies"
backpack的用法和样例：
例句
用作名词(n.)Let me take my camera out of my backpack.让我把相机从我的背包里拿出来。My backpack is thin, but theirs are heavy.我的背包是轻的，但他们的是重的。用作动词(v.)We shall have to backpack supplies through the woods.我们必须背负补给品穿过森林。Why should she wait to backpack across Europe with you?她为什么要等着和你一起去欧洲背包旅行?
