他们每小时达到70英里。

They were doing 70 miles an hour.

《柯林斯英汉双解大词典》

汽车以每小时90英里的速度行驶。

The car was doing 90 miles an hour.

《牛津词典》

每小时420英里时，挡风玻璃碎了。

At 420 mph the windshield disintegrated.

《柯林斯英汉双解大词典》

So, if we're trying to figure out the wavelength of a Matsuzaka fastball, we need to consider the velocity first, which is 42 miles per hour.

如果我们尝试计算一个,松阪发出快球的波长，我们首先需要考虑速度，每小时为42英里。

麻省理工公开课 - 化学原理课程节选

We don't usually do our chemistry calculations in miles per hour, so let's switch that to 42 meters per second, so it's -- sorry, it's 94 miles per hour.

在化学计算中我们很少,用英里每小时，所以我们把它换算为42米每秒，对不起，它是94英里每小时。

麻省理工公开课 - 化学原理课程节选

Mike actually holds the world record for downhill speed skiing for blind person, which is 60 miles an hour.

实际上,迈克是盲人高山滑雪的记录保持者，速度达到了每小时60英里。

斯坦福公开课 - 7个颠覆你思想的演讲课程节选