back up item

基本解釋

Start with the item farthest back and work up to the present.
啟動該項目，最遠回來工作，目前為止。
Back-open design makes it convenient to pick up goods; Reasonable separation design of inner space is suitable for different item storage.
后開式設(shè)計，便于取物，內(nèi)部空間合理劃分，便于放置不同物品。
You may choose any item from a particular floor, or may choose to go up to the next floor, but you CANNOT go back down except to exit the building.
你可以在任何一層選擇任意商品，你也可以選擇登上下一層，但是，你不能往回走，除非你要離開商店。