名词
中文翻译：背包
同义词：
['pack', 'rucksack', 'knapsack']
例句：
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1.She packed her bags and left for the airport early in the morning.
她早早地打包行李，准备去机场。
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2.The hiker carried a heavy rucksack filled with supplies.
这位徒步者背着一个装满补给的重背包。
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3. He bought a new knapsack to carry his fishing gear.
他买了一个新的背包来携带他的钓鱼装备。