per hour

基本解释

The meter indicates the speed to be 45 miles per hour.
仪表指示出速度是每小时45英里。
They are ramming their motorcycles on the expressway at 80 miles per hour.
他们正以每小时80英里的速度骑着摩托车在高速公路上疾驶。
The tsunami traveled across the Pacific at about 550 miles per hour, or the speed of a jet plane.
海啸以每小时约550英里的速度穿越太平洋，相当于一架喷气式飞机的速度。
crazymouth.com

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