名词
中文翻译：中等尺寸的八开本
同义词：
['medium-sized', 'medium-sized booklet', 'medium-sized paperback']
例句：
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1. Thisis a medium-sized book that I bought for my sister's birthday.
这是我为妹妹的生日买的一本中等大小的书。
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2.The new magazine has a medium-sized format, making it easy to read on the go.
这本新杂志有中等大小，便于在移动中阅读。
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3. The publisher decided to publish a medium-sized edition of the classic novel in order to reach a wider audience.
出版社决定出版一本中等大小的版次，以触及更广泛的读者群。