BBC news 2011-03-16 加文本

发生;举行
When will the basketball game take place?
篮球赛何时举行?

A series of

一系列,一连串

For a while

不久,短时间,暂时,一会儿

no longer

adv.不再

It must know how to go away when its services are no longer required. 
 当不再需要这种服务时，这种帮助应该消失。 

go on

1.继续下去
If he goes on like this he'll lose his job.
如果他继续这样下去,他会丢掉差事的。

2.(时间)过去
As the months went on, he became impatient.
一个又一个月过去,他逐渐变得不耐烦了。
 
3.发生
What's going on here?
这儿发生什么事啦?

used to be

过去是

"She used to be terribly shy, but a year abroad have completely transform her" 
 她过去十分 腆，但在国外呆了一年以后完全变了 

agree to

同意;接受
Do you agree to my plan?
你接受我的计划吗?

At least

至少
He smoked at least half a packet of cigarettes a day.
他每天至少抽半包烟。