the sport of taking part in races on roads, especially on a bicycle or motorcycle

He decided road racing looked like fun and grew up to become one of the great American cyclists. 他小时候觉得公路赛看起来很有趣，长大后成为美国最伟大的自行车运动员之一。

The death of Robert Dunlop was grievous blow for motorcycle road racing. 罗伯特·邓洛普之死对摩托车公路赛来说是一个沉重的打击。