One solution for that is to get a copy of a textbook I wrote called Basic Training in Mathematics.

解决办法之一,就是买一本我编写的教材,书名叫《数学基础训练》

耶鲁公开课 - 基础物理课程节选

The history of the military in the United States and other countries includes a lot of attempts to get animals like pigeons or dolphins to do interesting and deadly things through various training.

各国在其军事史中,都有试图通过训练鸽子海豚等动物,去完成各种高难而致命任务的尝试。

耶鲁公开课 - 心理学导论课程节选