名词
中文翻译：滚帽系统同义词
同义词：
['roll-upcap system', 'roll-up cap system', 'roll-up cap system']
例句：
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1. The roll-cap systemis a popular method for students to carrytheir books.
滚帽系统是学生常用的携带书籍的方法。
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2. The roll-cap systemhas been shown to improve student engagement inclass.
研究表明，滚帽系统可以提高学生的课堂参与度。
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3. The roll-cap systemis designed to reduce the number of timesstudents need to take out their textbooksfrom their backpacks.
滚帽系统的设计是为了减少学生需要从背包中拿出教科书的次数。