My uncle was a hot walker. I grew up at the track.
我叔叔是个遛马人 我是在马蹄下长大的。
英语百科
Hot walker
A hot walker within the practice of horse management may refer either to a person such as a groom employed in the job of hand-walking hot, sweaty horses after a workout, particularly after work on a racetrack, or it may refer to a mechanical device designed for the same purpose.