wear a backpack 戴一个背包 ; 戴上一个背包
I lost a Backpack 我丢了一个双肩背包
A Backpack and a Bus 行李与公交车
A Better Backpack 更好的背包
"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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