界面上方的最右端有个类似于扳手的图标，点击它，然后调到选择第一个选项进入，然后选择第一行第一个类似于毛笔的图标，在那个里面可以修改字体
若是中文的话，点击界面上 首选项（ 类似于设置一样的东西）然后你会看到第一排有外观和体验，里面有语言
or
You may try the following solution.
- move the curson to the "Preferences" (the icon looks as "setting icon"), don't
double click, pop the pull down menu, you will see
" change calibre behavior"
" Run welcome wizard"
- click on "run welcome wizard"
It will pop the window welcome wizard that allow you to change from
current language to any difference languages...
then you can go back and forth...
Hopefully, it helps...
不会
