And it turns out that the dog— when they zapped part of its brain, its leg would kick up.

结果是那只狗,当研究者们电击某个大脑区域时,狗的四肢便会乱踢起来

耶鲁公开课 - 心理学导论课程节选

And I like to extend it all the way up the leg,

我想把它沿着腿一直往上纹，

你如何看待纹身？ - SpeakingMax英语口语达人