Correct decisions came when the referees were moving at a speed of about 2 meters per second.

当裁判以每秒两米的速度移动时，裁判做出了正确的判罚。

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A speed limit of 30 mph was introduced in built-up areas.

在建筑物密集区域，限速为每小时30英里。

《柯林斯英汉双解大词典》

They were travelling at a speed that was double the legal limit.

他们正以两倍于法定限速的速度行驶。

《牛津词典》

Tornadoes usually travel in a northeasterly direction with a speed of thirty-two to sixty-four kilometers an hour.

VOA: special.2010.05.11

For example, if we're talking about a pitcher, like Matsuzaka, we might want to know the speed of his average fastball.

举例来说，如果我们谈到一个投手，就像松阪，我们想知道他投出,快球的平均速度。

麻省理工公开课 - 化学原理课程节选

OK. Now. This is just sort of bringing us back up to speed and adding a few more details in.

好，现在，我们刚刚回头,过去看了一些,细节问题。

麻省理工公开课 - 计算机科学及编程导论课程节选

To travel through beautiful scenery at a speed of four horsepower is just marvelous.

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