They can go about 25 miles per hour.

它们每小时可以走约25英里。

youdao

It can fly at a speed of about 200 miles per hour.

它能以每小时200英里的速度飞行。

youdao

Seventeen times per hour, to be exact.

确切地说，每小时有17次。

youdao

Stephen Strasburg can throw a baseball more than one hundred sixty kilometers per hour.

VOA: special.2010.06.18

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

The ore is pulverized in a crusher that can smash 300 tons of rock per hour.

FORBES: The Treasure of the Sierra Madre

People engage in conversations that can often run up to 20 to 40 updates per hour.

FORBES: Connect

Do you achieve less per hour if, for instance, fewer customers come through the door?

BBC: Picking up the slack