名词
中文翻译：先前的版本
同义词：
['previous', 'preceding', 'previous edition']
例句：
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1.The book has a previous edition that is out of print.
这本书有一本已经绝版的前一版。
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2.The new version of the software has improved the previous edition's shortcomings.
新版软件改进了前一版的不足。
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3.The previous edition of the document was printed in black and white.
该文档的前一版是黑白印刷的。