The scientists used the Hubble to figure out the direction of the star's travels and the distance from the galactic center, along with the star's mass, age and speed.

科学家们利用哈勃望远镜计算出该恒星行进的方向和离银河系中心的距离，连同他的质量、年龄和速度一起计算。

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Edward Curtain, operator of the recovery center, said in almost all sports, the key to success is to develop power and speed.

该中心的管理人员爱德华·科顿表示，几乎在所有的体育运动中，成功的秘诀就在于力量和速度。

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The amount of angular momentum, say, a spinning skater has depends on both the speed of rotation, and the weight and distribution of mass around the center.

角动量的大小，取决于旋转中的滑冰选手的旋转速度、体重和绕旋转中心的质量分布。

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"When flying low in combat, speed is life. Now,from the left,Captain Smith and Captain Cox return to show center at 300 feet and nearly the speed of sound,".

VOA: standard.2009.11.15

Whenever you see a particle moving in a circle, even if it's at a constant speed, it has an acceleration, v square over r directed towards the center.

只要看到质点做圆周运动,即使是匀速圆周运动,也存在一个加速度,大小为 v^2 / r,方向指向圆心

耶鲁公开课 - 基础物理课程节选

As long as there is a birds-eye view from one building to the next, the laser beam can transmit to and from a high-speed transmission center.

CNN: Terabeam aims to solve 'last mile' data jam

This slight, bespectacled Metro Man says the expansion, which includes a high-speed airport train to the city center, is all under control.

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In fact, a little computer on the CJ1's center console calculates rotation speed to the knot, based on temperature, altitude and weight aboard.

FORBES: Jet Pilot for a Day