racetrack
noun [ C ] uk/ˈreɪs.træk/ us/ˈreɪs.træk/
（通常指圆形、地面较硬的）跑道，赛道;（包括建筑物等设施的）比赛场，赛马场，赛车场
a path or road, usually circular and with a hard surface, on which runners, cars, bicycles, etc. race, or the area that includes this path and buildings around it
mainly US (UK usually racecourse)赛马跑道
a wide, usually circular, path with a grass surface, on which horses race, or the area that includes this path and buildings around it