horse racing
US /ˈhɔːrs ˌreɪ.sɪŋ/
UK /ˈhɔːrs ˌreɪ.sɪŋ/

1.
赛马
the sport of racing horses, especially thoroughbreds, often with betting involved
:
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He loves going to the track to watch horse racing.
他喜欢去赛马场看赛马。
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The Kentucky Derby is a famous horse racing event.
肯塔基赛马大会是一项著名的赛马赛事。