名词
中文翻译：开本
同义词：
['open book', 'open-leaf book']
例句：
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1.The teacher asked the students to open their books and read aloud.
老师要求学生们打开书本大声朗读。
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2. The library has an open-book policy, allowing anyone to borrow books without a reservation.
图书馆实行开放借阅政策，任何人都可以无预约借阅图书。
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3. Students are encouraged to use open-book learning strategies during class, which means they can take notes and ask questions.
鼓励学生在课堂上使用开放式学习策略，这意味着他们可以记笔记和提问。