屏幕镜头、示范片，新增历，常可在作者的网页。

Screen shots, demonstration movies, additional ephemerides, and FAQ available at author's website.

youdao

屏幕镜头、示范片，新增历，常可在作者的网页。

Screen shots, demonstration movies, additional ephemerides, and FAQ available at author's website.

youdao