They walked toward the bridge. Before they could reach it, bullets began whizzing past them.

VOA: special.2009.06.25

Yet, for all that, it didn't exist before my body began to exist.

然而它并不是先于我的存在

耶鲁公开课 - 死亡课程节选

So, he went to where people thought Troy might be and he began digging there, and before you know it, he discovered a mound filled with cities, which he believed was Troy.

因此,他来到人们认为的特洛伊城的所在地,然后,开始挖掘,然后你们知道的,他发现了土堆之中的城市,他相信那就是特洛伊城

耶鲁公开课 - 古希腊历史简介课程节选

Some Republican senators began criticizing it even before Wilson's ship reached the port of Boston.

VOA: special.2010.11.04

It will consider the period from summer 2001, before military operations began in March 2003, and our subsequent involvement in Iraq right until the end of July this year,".

VOA: standard.2009.06.15