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

This is the time of year when we see usually an effort by the insurgents to knock us of course and to try and attack the coalition and indeed the government of Afghanistan.

VOA: standard.2010.05.19