horse,马，power,能量。即马的力量，后来被物理学家用来指能量单位。

1. a powerful car with a 170 horsepower engine

发动机为170马力的大功率汽车

2. The worshiper thinks that the worst is the insufficient horsepower.

崇拜者认为最坏的事是马力不足.

3. The engine puts out thirty horsepower.

这台发动机可产生30马力.

4. It was over 30 feet in length and had a 2500 - horsepower engine.

它的车身长30英尺,有一个2500马力的发动机.

5. The engine has more than 4,000 horsepower.

这台发动机马力超过4，000。