It was on a sign that a student carried during a protest demonstration at a university.

VOA: special.2010.05.16

So, the goldsmith would sign his name on it saying, I promise to give so many ounces of gold.

所以这个金匠会在票据上签名,保证归还多少盎司的金子

耶鲁公开课 - 金融市场课程节选

I'm not sure whether we'll use the Classes server to have you sign up for discussion sections online, or whether we will do it the old-fashioned way and have you sign up on forms that we'll give you here in class.

我还没想要是用校网站,让大家在线讨论，还是用传统的,课堂讨论。

耶鲁公开课 - 新约课程节选

It's on Twitter and Facebook. Jonathan Tench, Oxfam's parliamentary officer "You've had thousands of people sign up to support the Robin Hood Tax and talk about it on Twitter.

VOA: standard.2010.02.18

"One of the things I am suggesting is a communal statement that synagogues sign on to, and that has language that creates a playing field that makes it clear that such language and violence will not be accepted, that people who are gay are welcome to pray and participate in synagogue life and that religion is not about excluding and hating but about finding areas where we can come and be in the presence of the divine,"

VOA: standard.2009.08.04