Grant said all the armies would attack at the same time.

VOA: special.2009.11.26

So how would we go about solving this problem if I told you not only was there a maximum weight, but there was a maximum volume. Well, we want to go back and attack it exactly the way we attacked it the first time, which was write some mathematical formulas.

有些时候两个都重要,所以如果我告诉你这里不仅有,最大重量还有最大容量，我们应该怎么解决这个问题呢？,好了，我们想回过来然后,和第一次一样看看这个问题。

麻省理工公开课 - 计算机科学及编程导论课程节选

Mr.Obama's comments marked the second time in two days that he interrupted his vacation in Hawaii to talk about the attempted attack.

VOA: standard.2009.12.29

The other benefit is deterrence. "It will save time of fighting and will deter in many cases a potential enemy from really launching an attack."

VOA: standard.2010.07.20

He says it would be unwise to proclaim that no terror attack could occur in his country, but he said there is no known threat at this time.

VOA: standard.2010.06.02