But in the western United States, there are highways where the speed limit is one hundred twenty-five kilometers an hour.

VOA: special.2010.04.26

Well, I don't care for the speed but I can't get enough of that safety gear.

我不在乎速度,我就是对那些安全装置百看不厌。

耶鲁公开课 - 公正课程节选

I agree, but I want the speed in meters per second.

我同意,但我希望速度以米每秒为单位

耶鲁公开课 - 基础物理课程节选

But blood drops with long tails can tell a great deal about the direction, speed and angle of the blood's starting point.

VOA: special.2010.05.05

Remember, you've got to keep track of the sign of acceleration, so if you're picking up speed towards the ground, a is negative, so it will be g plus a, but a is a negative number.

记住,一定要注意加速度的符号,所以当你加速下降的时候,a 是负的,还是 g 加上 a,但是 a 是负数

耶鲁公开课 - 基础物理课程节选

Earlier in the week, the head of the World Bank said international support can speed progress -- "but only if coupled with real reform."

VOA: special.2011.05.27

A high-speed French train can reach 574 kilometers per hour, but the record was set a Japanese train with a speed of 581 kilometers per hour.

VOA: standard.2010.02.15

But some Democratic lawmakers contend the long-term key to defeating the insurgency in Afghanistan is not to send more foreign troops, but to speed training of Afghan security forces.

VOA: standard.2009.10.25

But he says speed is not necessarily the number-one priority.

VOA: standard.2010.05.10

The European Commission's annual progress report on Turkish membership said Ankara has made some improvements on handling of human rights but said Turkey needs to speed up reforms to boost its chances of joining the bloc.

VOA: standard.2009.10.15

The picturesque town was a popular tourist destination, but the majority of its buildings were crushed by the onslaught of an unprecedented firestorm that advanced with such speed and ferocity and gave many residents little chance of survival.

VOA: standard.2009.03.21

The project will develop 13 corridors between heavily populated areas, but only the ones in California and Florida will be truly high speed because,says Amtrak's Steve Kulm, those states will be the only ones to build tracks exclusively for high speed trains.

VOA: standard.2010.02.15