Miles per hour
01
英里每小时, 每小时英里数
the distance traveled in miles in relation to the time passed when doing so
例子
Miles per hour ( mph ) is a unit used to measure speed, representing the distance traveled in miles per hour of time.
每小时英里数（mph）是用来测量速度的单位，表示每小时时间内的英里行驶距离。
Speed limits on highways are often expressed in miles per hour, such as 65 mph or 55 mph.
高速公路上的速度限制通常以英里每小时表示，例如65 mph或55 mph。
02
the speed indicated on a vehicle's speedometer at a given moment
例子
The speedometer showed 70 miles per hour.
The gauge fluctuated between 50 and 55 mph.
