How long does the play last?

那出戏要演多长时间？

《牛津词典》

How long does it take to qualify?

需要多长时间才能取得资格？

《牛津词典》

How long does the journey usually take?

这段旅程通常需要多长时间？

《牛津词典》

And the obvious question I could start with is, and suppose I ask you, how long does the algorithm implemented by this program take to run?

我开始这个话题的第一个问题是，假设我问你，由这个算法实现的程序大概,要运行多久才能给出答案？

麻省理工公开课 - 计算机科学及编程导论课程节选

How long does it take you to get to your destination with Eurostar?

你坐欧洲之星去目的地要花多长时间？

方便的欧洲之星 - SpeakingMax英语口语达人

Lisp The problem with that technique, while it's very general, is how long does it take me to find the i'th element of the list?

很多编程语言包括，都是用了这种技术,这个问题就是，当数组很大的时候？

麻省理工公开课 - 计算机科学及编程导论课程节选

On a more basic level, how long does it take the SEC to process a tip?

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How long does Apple store all of this stuff, and who gets a look at it?

CNN: IBM worries iPhone's Siri has loose lips

The equally consequential part of this dispute is how long does this production last.

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