bag 与backpack有什么区别?

bag 与backpack有什么区别? Poly bag,PVC bag,PE bag有什么区别? is this your bag?与is this bag yours?有什么区别 backpack与handbag的区别 bag、packet与case有何区别? rucksack和bag的区别rucksack和bag具体有什么区别? The bag in which a camera was.的翻译与The bag which a camera was in.的翻译有什么区别 朗文与BACKPACK有啥联系 This is your bag.和 Here's your bag.有什么区别? bag for sports.bag of sports.两句话有什么区别 Have you bought a new bag 和Did you buy a new bag有什么区别 sports bag 和Athletic bag?sports bag 和Athletic bag 两者有什么区别?怎么网业上的包包会有这样的分类? a bag with food和a bag full of food及a bag of food 有何区别?with与of 爱玛仕Birkin Bag和Kelly Bag又什么区别呢? it go home and take a large bag.it go home with a large bag.有什么区别? carry my bag 和with my bag有区别吗? BACKPACK什么意思 backpack什么意思