I got about half the answers right.

我的回答约有一半是正确的。

《牛津词典》

Only about half of the electorate bothered to vote.

只有约半数的选民参加了投票。

《牛津词典》

That's about half the going price on world oil markets.

那大约是世界石油市场上现行价位的一半。

《柯林斯英汉双解大词典》

Even though West Virginia had remained in the Union, about half of the people in the state supported the South.

VOA: special.2009.07.20

and the question that I've been asking They are The Tadzhiks in Afghnastan constitutes what about half of the entire population?

我一直在问的一个问题就是,塔吉克斯坦能占到多少，一半的整个阿富汗人口？

普林斯顿公开课 - 国际座谈会课程节选

And then we're going to try a demo to see if we can convince ourselves that the kind of calculations we make work out perfectly, and we'll do a test up here about half way through class.

然后我们将会尝试演示去看看,是否可以确信我们能够很好的,做出这个类型的计算，我们将在课程中做一个测试。

麻省理工公开课 - 化学原理课程节选

And about half of American adults have a presence on social media, according to Pew.

CNN: In Facebook age, is camera-shyness a thing of the past?

Film-based musicals comprised about half of the top 10 grossing musicals in each of the last 10 years.

BBC: Broadway's pop culture revival

And TNS says about half of those buying time purchase more than one 30-second spot.

FORBES: Is A Super Bowl Ad A Super Deal?