knapsack
US /ˈnæp.sæk/
UK /ˈnæp.sæk/
1.
背包, 行囊
a bag with shoulder straps, carried on the back, and typically made of canvas or other waterproof material
:
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He packed his lunch and a water bottle in his knapsack before heading out for a hike.
他把午餐和水瓶裝進背包，然後去徒步旅行。
•
The old soldier carried his belongings in a worn leather knapsack.
老兵把他的物品裝在一個磨損的皮背包裡。