an imperial unit of power equal to 550 foot-pounds per second (about 750 watts)
马力(在英制里,1马力等于每秒钟做550英尺磅力的功,约750瓦特)。
the power of an engine measured in terms of this
(发动机的功率)马力
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a strong 140-horsepower engine. 一台强劲的140马力的发动机。参见<Bold>BRAKE HORSEPOWER</Bold>.