1. 

   2 years ago

   Carl Binder on the Legacy of B.F. Skinner | LET # 039

   Learning Technology
2. 

   3 years ago

   Short History of Libraries

   Mossy Feet Books
3. 

   4 years ago

   我寫了一個超快速上 CC 字幕的程式，免費送給大家 + 使用教學！

   NiceChord (好和弦)