By Rajesh Mirchandani, BBC reporter, Los Angeles

媒体英语会带大家一起学习BBC撰稿人在报道世界大事时常用到的单词和短语。

Background:3D技术在电影和电视中的使用越来越普遍。时尚设计师们也没有放过这个赚钱的大好机会，开始设计多种可以作为时尚饰品的3D眼镜。

Some think it's the next must-haveaccessory for movie-buffs. At the cinema why wear those free plastic specs that someone else has used already, when you can buy your own 3D glasses? Designers like Oakley and Calvin Klein hope consumers will pay up to US$180 a pair to be trendsetters.

It's the next step in the personalisation of 3D entertainment. It's already a growing format for movies including the blockbuster Avatar.

Now electronics companies are offering 3D TV sets for the home. But they may supply 3D glasses that work only with their products, not in cinemas. Which would make those stylishdesigner glasses of limited use.

Just as with the advent of home video recording when VHS battled and triumphed over Betamax, there could be a format war looming over 3D glasses.

Designers hope they're tapping into a fashion-conscious market but soon will those personalised 3D specs be useful or just stylish?

• entertainment [,entə´teinmənt]   n.招(款)待；联欢会   (初中英语单词)
• reporter [ri´pɔ:tə]   n.报告人；记者；广播员   (高中英语单词)
• offering [´ɔfəriŋ]   n.提供；礼物；捐献   (高中英语单词)
• limited [´limitid]   a.有限(制)的   (高中英语单词)
• accessory [ək´sesəri]   n.附件；帮凶 a.附属的   (英语四级单词)
• advent [´ædvent]   n.来临；降临   (英语四级单词)
• designer [di´zainə]   n.设计者   (英语六级单词)