名词中文翻译
中文翻译：背包
同义词：
['rucksack', 'pack', 'shoulder bag']
例句：
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1. He carried his rucksack on his back as he walked through the forest.
他背着他的背包，穿过森林时走着。
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2. She packed her bags and headed for the airport early in the morning.
她打包好行李，一大早就出发去机场了。
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3. The backpack was filled with books, pens, and pencils.
这个背包里装满了书、钢笔和铅笔。