“旅行包”用英语怎么说？

她买了一只能装得下那些胶卷筒的旅行包。She bought a travel-bag large enough to contain the film canisters.我把钱藏在旅行包里。I hid the money in my pack.我们学校为那次旅行包了三辆公共汽车.Our school chartered three buses for the trip....