该版本新增了一些新功能，以及修复了部分 bug，具体如下：
新特性
Browser viewer: Allow long tapping a word to look it up in a dictionary or search the internet for it.
Bug 修复
Conversion: Handle the deprecated type attribute on
- tags.
Fix metadata download from amazon stopped working because of a website change
Fix re-ordering of columns causing split book splitter state not being restored on restart
Fix errors when using strftime with unicode strings on non-utf-8 windows systems.
Split book view: Fix vertical scroll position of the two views getting out of sync after doing some searches.
Fix some edit widget appearing in the wrong place when editing in the right hand panel of the new split book list.
Portable build: Fix cache directory not always being auto-created
Workaround for Qt 5.10 on Linux resetting the global font, preventing custom interface font settings from working
改进的新闻源
New York Times
The Economist
Gosc
Various Uruguayan recipes
软件详情：https://github.com/kovidgoyal/calibre/commits/master
下载地址：https://github.com/kovidgoyal/calibre/releases/tag/v3.18.0
来自:开源中国社区