To prevent violence, some 1,500 Israeli police officers guarded the Gay Pride Parade, which meant about one police officer for every two participants in the event.

VOA: standard.2010.07.29

An eight standard deviation event happens once out of every six trillion trials.

而八个标准差的偏离就意味着,六万亿分之一的概率

耶鲁公开课 - 金融市场课程节选

Go to every live music event and every kind of media event.

去看每一场现场音乐会，参加每一个媒体活动。

想学音乐吗？ - SpeakingMax英语口语达人

The annual event attracts thousands of tourists and history buffs every year.

VOA: standard.2010.07.03

Started in 1987 as a way to bring national attention to Texas musicians like Schneider, South by Southwest is a now week-long event with performers from every continent arriving in Austin, trying to get the attention of booking agents,managers, publishers,record labels, radio presenters,critics and others in the music industry.

VOA: standard.2010.04.07