The drill takes about three hours to recharge.

钻机充一次电大约要三个小时。

《牛津词典》

I should imagine it will take about three hours.

我想得用差不多三个小时吧。

《牛津词典》

The two sides exchanged small arms fire for about three hours.

双方用轻武器交火大约有3 个小时。

《柯林斯英汉双解大词典》

He reduced the long story into an opera that lasts about three hours.

VOA: special.2010.06.11

And if you are prepared to stand up for about two and a half to three hours to watch a play,

而且你要准备好了站上大约两个半小时到三个小时，去看一场戏剧，

莎士比亚环球剧院 - SpeakingMax英语口语达人

About three hours north of Port-au-Prince, the Artibonite Valley is the center of Haiti's rice production.

VOA: standard.2010.04.29

The accident occurred during a 130-kilometer (80-mile) journey that usually takes about three hours.

NPR: Ferry Capsizes In Malaysian River, 21 Missing

Data suggests the site suffered sporadic outages for about three hours, from 11 p.m.

FORBES: Facebook Outage Slowed 1000s Of Retail, Content Sites

Mr. Asika was treated and released from Bellevue about three hours after the incident.

WSJ: Nine Injured Bystanders Are Expected to Survive