求翻译：Towards the evening, there comes the grand finale of the opening day, an extremely exciting horserace. All the riders run very fast on horseback. Some riders hang off the side of their saddles. Some even ride upside down-their legs and feet straight up in the air-all at full speed. Others rush down the course together,是什么意思？

待解决 悬赏分：1 - 离问题结束还有