He said the United States will "take appropriate steps to let North Korea know that it can't threaten the safety and security of other countries with impunity."

VOA: standard.2009.04.03

It eventually outputs a ticket with the right amount, but my God, how many steps does it take for us to get there?

最终它适当地输出了一张票，但是我的天，我们需要多少步骤才能得到？

哈佛公开课 - 计算机科学课程节选

"People can do things in their own lives, with their children, they can do work in their communities to improve it and once you take those steps, the next logical step is to make sure that your government officials are doing the right thing."

VOA: standard.2010.04.25