请教个UrlRewrite规则

原URL:

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CODE:
http://localhost/index.php?key=%B5%E7%CD%E6%2B%D5%B9&type=album

想用ReWrite功能,用以下URL来访问,URL含有'%'字符,试了几次都不成功,如何写规则好?

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CODE:
http://localhost/index-key-%B5%E7%CD%E6%2B%D5%B9_type-album.html