knapsack compressed air type sprayer

例句：

1. 1. He packed his bagsand left for the airport early in themorning.
   他早早地打包行李，准备去机场。
2. 2. The hikers carried their rucksacks filled with supplies.
   徒步旅行者背着装满补给的背包。
3. 3. Shecarried her shoulder bag to the store.
   她提着她的肩包去了商店。