柯林斯词典half-marathon 1. N a race on foot of 13 miles 352 yards (21.243 kilometres) 半马拉松; 13英里352码的徒步跑 返回 half-marathon剑桥词典a running race over a distance of about 21 kilometres 半程马拉松赛(约21公里) 返回 half-marathon