名词中文翻译
中文翻译：背包
同义词：
['backpack', 'shoulder bag', 'satchel', 'briefcase']
例句：
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1. She carried her laptop in a backpackwhile traveling.
她在旅行时用背包背着笔记本电脑。
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2.The student's backpack is too heavyfor him to carry.
学生的背包对他来说太重了，他背不动。
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3. He puthis books in his backpackbefore leaving the house.
他离开家前把书放进了背包里。