pacer

名词 pacer:

1. a horse used to set the pace in racing
   同义词：pacemaker, pacesetter
2. a horse trained to a special gait in which both feet on one side leave the ground together

pac.er

n.（名词）
A horse trained to pace.
溜蹄的马：训练来溜蹄的马
Sports See pacemaker
【体育运动】 参见 pacemaker