It takes about half an hour to get to the airport.

到机场大概需要半小时。

《牛津词典》

I'll read for about half an hour to an hour.

阅读时间常常是半个小时或一个小时。

youdao

Almost it was about half an hour to 45 minutes.

最多是半个小时至45分钟的时间。

youdao

Officials say it took staff on Christmas Island about half-an-hour to regain control.

VOA: standard.2009.11.24

I needed about an half hour ahead start on him in the office in order to be sufficiently prepared to visit with him which I did every morning shortly after he arrived.

我需要在他之前,半个小时前就开始工作,为的是做好充分准备,跟他谈话,我每天早上,他到达办公室后都要跟他谈。

普林斯顿公开课 - 国际座谈会课程节选

Dr Stojanovic and his colleague Joanna Macdonald have used this approach to build simple DNA-based circuits capable of playing tic-tac-toe (though they take about half an hour to make each move).

ECONOMIST: DNA computing

Such a reversal is running out of time today, with just about half an hour left to go, the Dow is down 247, or 1.87%.

FORBES: No Heroic Rebound For Dow As Obama Victory Hammers Banks

The trains will run at 220 mph and the first leg would be from New York to Philadelphia (a trip taking about half an hour, compared to an hour and a half now) by 2023.

BBC: The futurist: Putting the choo-choo back in Chattanooga