The top compartment (with gray color) indicates the DataObject instance name and its real type; the bottomcompartment indicates the contained properties.
顶部间隔（灰色）指示 DataObject 实例名称及其实际类型；底部间隔指示所包含的属性。
2
In addition to the completely foam padded bottomcompartment, the pack has a large top compartment perfect for personal items, such as a lunch or light jacket.
除了完全海绵垫底部隔层，包内还有很大顶仓可放置个人物品如午餐或轻便夹克。
3
On the front side of the main compartment is sewn a nylon pocket with an elastic top edge, covering roughly the bottom half of the compartment, presumably for the hydration system.