knapsack
🇺🇸
/ˈnæpsæk/
🇬🇧
/ˈnæpsæk/
noun
R
a small bag worn on the back, used for carrying things.
She packed her books into her knapsack before leaving for school.
她在離開去學校之前，把她的書打包到背包裡。
translation
背包
詞形變化
Plural
knapsacks