有研究表明，在道路上画上笔直的横杆，可以在开始将司机的平均速度降低一半。

Some studies suggest that straight, horizontal bars painted across roads can initially cut the average speed of drivers in half.

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交通阻塞经常把车流的速度降低得如步行一般缓慢。

Congestion frequently reduces traffic to walking pace.

《牛津词典》

据新华社报道，该计划旨在从2020年到2030年间，将0-18岁儿童的肥胖增长速度降低70%。

The plan aims to reduce the growth of fatness among children aged 0-18 years by 70 percent from 2020 to 2030, Xinhua reported.

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and we like log algorithms, because they're really fast. A typical characteristic of a log algorithm is a pro-- or sorry, an algorithm where it reduces the size of the problem by a constant factor.

并且我们也很喜欢对数算法,因为它很快,对数算法的典型特性是高速，哦，抱歉，是他能以常数因子的速度,降低问题的大小，很明显。

麻省理工公开课 - 计算机科学及编程导论课程节选

There are no other molecules on that side of the wall. So there's an attractive force that makes the velocity within not quite as fast.

墙的另一边没有分子,因此吸引力,会降低球的速度。

麻省理工公开课 - 热力学与动力学课程节选