形容词
中文翻译：Unknown
同义词：
['bound', 'bounded', 'bounding', 'boundless', 'boundary', 'bounded', 'bounding', 'boundless', 'boundary']
例句：
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1. The book is paperbound and can be easily opened.
这本书是用纸装订的，可以很容易地打开。
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2. The old tree was paperbound by the river.
那棵老树被河水包围着，装订得紧紧的。
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3. The new library has a paperbound collection of books.
新图书馆有一本装订好的书集。