renewal fees have increased since 1985 by 4.5 times to 2.5 t的翻译是：什么意思？中文翻译英文，英文翻译中文，怎么说？-青云在线翻译网

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匿名	关注：1 2013-05-23 12:21 求翻译：renewal fees have increased since 1985 by 4.5 times to 2.5 times, depending on the patent age.是什么意思？待解决悬赏分：1 - 离问题结束还有 renewal fees have increased since 1985 by 4.5 times to 2.5 times, depending on the patent age. 问题补充：

匿名	2013-05-23 12:21:38 续期费增加了4.5倍到2.5倍，自1985年以来，根据专利年龄。

匿名	2013-05-23 12:23:18

匿名	2013-05-23 12:24:58

匿名	2013-05-23 12:26:38

匿名	2013-05-23 12:28:18

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求翻译：renewal fees have increased since 1985 by 4.5 times to 2.5 times, depending on the patent age.是什么意思？