Mogwanja says U.N.officials have urged Pakistani authorities to make sure that areas are stable and military operations are at an end before people are encouraged to return.

VOA: standard.2009.09.25

But we will also introduce towards the end of this semester in an effort to really make it okay to stay up all night, will be the first ever CS50 hack-a-thon.

但是，在这个学期末的时候,我们还会举办第一届CS50课程的Hackathon活动，你们可能还得熬夜才能完成它。

哈佛公开课 - 计算机科学课程节选

Then, you make an arrow corresponding to B and lay it on the end of this one.

再画一个表示 B 的箭头,把 B 放在 A 的终点

耶鲁公开课 - 基础物理课程节选

The two sides did not make any additional comments regarding requests from Chinese officials for Washington to put an end to curbs on "dual use" high-tech exports that have possible military applications.

VOA: standard.2010.05.25

The Obama administration,he added, must make clear that it does not view engagement with Iran as a process without an end, but as a means to identify ends that would benefit both countries.

VOA: standard.2009.04.28