In one recent US survey, about half the teens polled said that their cell phone had improved their communication with friends.

在美国最近的一项调查中，接受调查的青少年中约有一半表示，他们的手机改善了他们与朋友的交流。

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As I handed them to him, I noticed that one had been torn in half and fixed with a piece of blue paper.

VOA: special.2009.01.17

In terms of diversification, there are half a dozen asset classes with weights that range between 4% and 28%.

投资多元化方面,投资于六中不同的资产类别,权重从4%至28%不等

耶鲁公开课 - 金融市场课程节选

I got from a person that I worked with for two and a half years before coming here.

我在来这儿之前和他一起工作了两年半的时间。

写推荐书的人 - SpeakingMax英语口语达人

There are those that say we use way too many sponges, that you can clean things just as well with half that number of sponges.

FORBES: Your First Year With Clean For America

It was one of more than 60 ships that have been attacked by pirates off the Somali coast this year alone, compared with about half that in 2007, according to a report released earlier this month by Chatham House, a London-based institute that analyzes international affairs.

CNN: Somali forces free pirate hostages

"The Asian airlines operate with costs that are half that of Emirates and a third of Lufthansa's, " he says.

BBC: Norwegian airline prepares for global expansion