"Even for a range of zero , we have problems with water availability.

VOA: standard.2009.03.12

It's an example of a very common tool that's going to be really useful to us, not just for doing search, but for doing a whole range of problems. That is, in essence, the template the describes a log style algorithm.

不仅仅是做搜索,还可以解决一整类问题,本质上，这个模板就描述了,对数形的算法,我们一会再回来。

麻省理工公开课 - 计算机科学及编程导论课程节选

"President Obama embodies the new spirit of dialogue and engagement on the world's biggest problems: climate change, nuclear disarmament and a wide range of peace and security challenges,".

VOA: standard.2009.10.09

"Senator Mitchell and the president are deeply engaged with the Israelis and the Palestinians in trying to address the larger issues of peace and security and to create a long-term solution to the range of problems there.

VOA: standard.2009.10.03