President Barack Obama has said that the United States will not "wait indefinitely" for a response from Iran over the U.N.draft nuclear deal.

VOA: standard.2009.12.18

In United states, only five percent wait that long.

在美国，只有五分之一的病人需等待。

斯坦福公开课 - 经济学课程节选

We just have to wait and see for that,". A similar effort to develop a vaccine has been launched in the United States.

VOA: standard.2009.04.30