No one has claimed responsibility for the attack. Senior police official Ghafoor Afridi tells VOA that the bomber bypassed multiple security checkpoints.

VOA: standard.2009.09.26

While I was in college, part of the beauty and elegance of my undergraduate education was that between my junior and senior years I went on one of our college's seminars.

在我的大学期间，我的本科学业中的,一些美好的回忆,是在我的大三大四期间,我参加了一个学校的研讨会。

普林斯顿公开课 - 人性课程节选

One of the things about Princeton is that in your senior year,

普林斯顿有这么一桩事，你升上大三之后，

我尊敬的教授 - SpeakingMax英语口语达人

Gene Grabowski is senior vice president at one of the leading crisis management firm here in Washington.

VOA: standard.2010.06.10

Here is one case. We have job searches and sometimes job-- senior job searches involve the faculty sitting in--around in a room and tossing out names and we use these names as a basis for further discussion.

举个例子，我们要找合适的人填补空缺,有时候要填被一个高级职位,就需要全体老师坐在会议室里,例举一个个人选,这些人选会留待进一步讨论。

耶鲁公开课 - 心理学导论课程节选

One policeman told a senior military officer his children are virtually prisoners in their own home after he received repeated threats from Taliban.

VOA: standard.2010.05.26

David Kramer was a former senior State Department official in the Bush administration He also sees the U.S.position moving towards the Russian one.

VOA: standard.2009.07.15

Mr.Olmert is one of several senior Israeli officials who have recently been toppled by corruption scandals.

VOA: standard.2009.08.30

and he says he has "paid a heavy price." The Olmert case is one of several recent corruption scandals that have toppled senior officials.

VOA: standard.2009.09.25

FIFA,international soccer's governing body, allows a player to represent only one nation at the senior level.

VOA: standard.2010.06.09

One observer,Akiva Eldar, a senior columnist at the Haaretz newspaper in Tel Aviv, sees no movement unless one of the sides takes the first step.

VOA: standard.2009.11.16

Kiatichai Pongpanich is senior editor at the Khao Sod daily, one of Thailand's largest newspapers.

VOA: standard.2010.07.06

We have a gift for each and every one on our list. We were concerned this year if we would get a gift for each senior.

VOA: standard.2009.12.24