速度是所有体育运动的基本要素。

Speed is the essential ingredient of all athletics.

《柯林斯英汉双解大词典》

在这个时候速度是关键。

Speed is key at this point.

《牛津词典》

产生误差的平均速度是每秒4米。

The average speed for errors was 4 meters per second.

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But de Broglie has told us that the wavelength is related to the instant velocity through this formula.

但德布罗意曾说过,波长是和瞬时速度相联系的,通过这个公式。

麻省理工公开课 - 固态化学导论课程节选

If there were no voltage on the plates, we would expect everything to be over here in some negative value falling.

如果板子上没有速度，这些可能都在这,都是负值下降的。

麻省理工公开课 - 固态化学导论课程节选

And in terms of equations that we use, it's sometimes easier to plug in the fact, since momentum is equal to mass times velocity.

在我们使用方程这方面，事实上有时是很容易代入的，因为动量等于质量乘以速度。

麻省理工公开课 - 化学原理课程节选