knapsack的复数形式为：knapsacks...

knapsack的音标：knapsack的英式发音音标为：['næpsæk]knapsack的美式发音音标为：['næpˌsæk]...

" You can carry that blue knapsack. I'll take the tan one and the tripod. "“ 你可以帮着拿那个蓝背包, 我拿那个土黄色的和三脚架. ”Franklin placed the warm scarf Debbie had knitted for him in the top of his knapsack.富兰克林把黛比为他织的暖和的围巾放在背包的最上层....

n.（士兵或旅行者的）背包...