Still the U.N.says there is much work to be done.

VOA: special.2010.04.05

In the case of France again, they are the work of a brilliant military engineer called Vauban, v-a-u-b-a-n.

例如法国,在佩皮尼昂 里尔 蒙梅迪等地方,这样的要塞城镇随处可见

耶鲁公开课 - 欧洲文明课程节选

I know it's gonna take me a lot of work on the order of N squared steps to sort these things.

要对它们排序就要进行大量的工作,大概需要N平方步。

哈佛公开课 - 计算机科学课程节选

The U.N. suspended work by its monitors over the weekend in the face of rising violence.

WSJ: Rival Powers Hit Wall on Syria Plan

At the same time, the U.N. must work hard at selling its peace plan to neighboring nations, so they will rein in their proxies in Afghanistan.

CNN: A Workable Plan

We've had sanctions on the government of Sudan, and we're prepared to tighten those sanctions and to do so, both unilaterally as well as to work with the U.N. to try to have sanctions imposed multilaterally.

NPR: U.S. Officials Look for Political Solution to Darfur