[ 复数 backpacks 第三人称单数 backpacks 现在分词 backpacking 过去式 backpacked 过去分词 backpacked ]
N-COUNT A backpack is a bag with straps that go over your shoulders, so that you can carry things on your back when you are walking or climbing. 双肩包
An unattended backpack was found in a rubbish pile.
在垃圾桶里发现了一个无人看管的背包。
He had a small green backpack slung over one shoulder.
他把一只绿色小背包搭在一边肩上。
He staggered a little under the weight of his backpack.
他身上的背包压得他有点步履蹒跚。
"I don't want to spend more than twenty dollars for a backpack." Consumer spending is seventy percent of the economic activity in the United States.
VOA: special.2009.08.21
So we put one item in the backpack 9 and we've got a value of 9.
所以我们在背包里放一件物品,而它的价值是。
So I think I'm going to buy a new backpack.
所以我在考虑换一个新的双肩包。
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