You wait for the pig to do something that's halfway close to dancing, like stumbling, and you reward it.

你等到猪的动作有点像跳舞，比如它摇摇晃晃的，你就奖励它。

耶鲁公开课 - 心理学导论课程节选

A sudden blow: the great wings beating still Above the staggering girl, her thighs caressed By the dark webs, her nape caught in his bill, He holds her helpless breast upon his breast.

猝然突袭，硕大的翅膀拍击,那摇摇晃晃的姑娘，黑蹼爱抚,她的大腿，他的嘴咬住她的脖子，他把她无力的胸脯紧贴他的胸脯。

耶鲁公开课 - 现代诗歌课程节选