The 20-something athlete hurt his knee running track five years ago so he switched to disc golf, a lower impact game.

VOA: standard.2010.08.03

Now, let's imagine I've been very lucky and gotten to you-- just get down on your knee.

现在,假设我非常幸运地伤到你了,请蹲下

耶鲁公开课 - 古希腊历史简介课程节选

Now, let's imagine I've been very lucky and gotten to you-- just get down on your knee.

现在,假设我非常幸运地伤到你了,请蹲下

耶鲁公开课 - 古希腊历史简介课程节选