It will result in head pain, stomach problems and a feeling of tiredness after two to three hours.

VOA: special.2010.02.02

And she has to catch a flight, and you know the flight is going to leave in three hours and she's taking her time.

她马上得去赶飞机，你知道飞机在三个小时后就要起飞了。可她还在磨磨蹭蹭。

Make sure 课堂 - SpeakingMax英语口语达人

A studio of three hours' lecture in a large lecture hall, and two hours of recitation in groups of thirty.

在一个大的讲堂的教室里,讲三个小时讲座，并以三十人为一组,进行两小时背诵。

麻省理工公开课 - 媒体、教育、市场课程节选

But recent findings suggested that tPA may be effective in saving brain tissue even if three to four and a half hours have passed.

VOA: special.2009.09.22

Or perhaps Chinese on Monday, Wednesdays, and Fridays and Thai on Saturdays and Sundays and spending two hours in the afternoon doing math and three hours in the morning doing philosophy.

或周一三五吃中餐,周六日吃泰国菜,下午花两小时研究数学,上午三小时思考哲学，统统没有用。

耶鲁公开课 - 死亡课程节选

But recent findings have suggested that tPA may be effective in saving brain tissue even if three to four and a half hours have passed.

VOA: special.2009.08.12

and the last quarter is a seminar in which you only go once a week for three hours

最后一个季度是研讨会，每周只需要参加三个小时，

群集课程 - SpeakingMax英语口语达人

Faisal Shahzad was quickly identified and arrested fifty-three hours after the attempt in Times Square.

VOA: special.2010.05.08

you always have to sit in the same room for three hours for multiple classes.

你必须在同一个房间为了多个课程坐三个小时。

对于古怪教授 - SpeakingMax英语口语达人

Astronauts Borman and Lovell had been in space more than three hundred thirty hours.

VOA: special.2009.07.01

In two thousand three, the Council reduced the hours that residents may work.

VOA: special.2009.06.02

It made the trip in twenty-three days, twenty-three hours.

VOA: special.2010.04.26

Scott says that waiting in line for three hours was worth it to hold one of the medals.

VOA: standard.2010.02.16

President Obama and 18 members of his national security team spent about three hours in the White House Situation Room Wednesday, assessing their Afghanistan policy.

VOA: standard.2009.10.01

plays the title character in "Jonah Hex." Brolin says it took three hours in the make-up chair every day to give the character his disfigured look.

VOA: standard.2010.06.20

Some European stores reported selling out their stock of iPads in under three hours.

VOA: standard.2010.05.28

"Three or four hours before I could fall asleep. I wake up three o'clock in the morning with the same stuff on my mind, tossing and turning.

VOA: standard.2010.05.04

"Now we have what we would call rush hour conditions or peak travel conditions for as much as eight hours during the day - about three to four hours in the morning and similar time in the evening."

VOA: standard.2010.07.26