But they say the United States is losing patience with what they see as fruitless overtures to Tehran, and they say they believe that sanctions should be imposed without delay if the long-anticipated visit to Tehran by President Lula fails to produce results.

VOA: standard.2010.05.14

or sorry, you did choose to show up today, we'll understand, but please also understand that the TAs won't have a lot of patience with you if you're asking a question about something that was either covered in the readings, or covered in the lecture and is pretty straight forward. All right?

你确实决定了来上课，我们会理解你的，但是请明白,当你问了一个,既在阅读材料里,也在课堂上讲过的浅显问题时，助教们可没有太多耐心,接待你？

麻省理工公开课 - 计算机科学及编程导论课程节选