Scientists agree that musical instruments are a sign of fully modern behavior and a complex form of communication.

VOA: special.2009.08.18

So you'll see that you have in front of you a legal release form, you have to be able to sign it, and what that says is that we can use you being shown in class.

你们的面前应该有张授权书,授权书的大概内容是,允许我们把你拍摄进来

耶鲁公开课 - 博弈论课程节选

"And,you know, they think I'm kind of joking when I have them sign this form.

VOA: standard.2010.02.26