Driving a motor vehicle exceeding the prescribed speed per hour by 50%;

机动车行驶超过规定时速百分之五十的；

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The maximum speed per hour indicated on the speed limitation mark of an expressway shall not exceed 120 kilometers.

高速公路限速标志标明的最高时速不得超过一百二十公里。

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Article 58 When a motor wheel chair vehicle of a disabled person or an electric bicycle is running within the non-motor vehicle lane, the maximum speed per hour shall not exceed 15 kilometers.

第五十八条残疾人机动轮椅车、电动自行车在非机动车道内行驶时，最高时速不得超过十五公里。

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A high-speed French train can reach 574 kilometers per hour, but the record was set a Japanese train with a speed of 581 kilometers per hour.

VOA: standard.2010.02.15

Sometimes they give you the speed in miles per hour, kilometers per year, pounds per square foot.

有时候速度的单位是英里/小时,千米/年,英磅/平方米

耶鲁公开课 - 基础物理课程节选

And this is a very fast speed, of course, it's about 700 million miles per hour. So, one way to put that in perspective is to think about how long it takes for a light beam to get from earth to the moon. Does anyone have any guesses? Eight seconds, that sounds good.

当然这是一个非常快的速度，它大约是每小时7亿英里,为了更形象化，我们,看看光从地球到月球,需要多少时间，你们猜猜是多少？,8秒，猜的不错。

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Over a one-mile distance on Interstate 84 northeast of Hartford, the fastest 5% of drivers routinely flaunt the 65-mile-per-hour speed limit by driving 85 miles per hour.

FORBES

The Ford Focus Electric is powered entirely by a 23 kilowatt hour lithium ion battery, and capable of a top speed of 84 miles per hour.

FORBES: Ford Launches Its First Fully Electric Car

The EPA's traditional highway test is conducted at an average speed of 48.3 miles per hour and a top speed of 60.

WSJ: Why Your Mileage May Not Measure Up