名词
中文翻译：变化袋
同义词：
['changeable bag', 'variable bag']
例句：
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1. She carried a changing bag with her when she went on a trip.
她去旅行时带着一个可变包。
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2. The changing bag was filled with all the necessary items for the trip.
那个可变包里装满了这次旅行所需的所有物品。
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3. He put his laptop into the changing bag and took it to the airport.
他把笔记本电脑放进可变包，然后带到了机场。