The best known riderless horse was black jack .

最有名的无人的马叫黑夹克。

The best known riderless horse was " black jack " .

最著名的无骑士的马是“黑杰克”。

A single horse , comanche , survived and for many years thereafter appeared in 7th cavalry parades , saddled but riderless .

只有一匹马，卡曼奇，幸存下来在很多年以后出现在第七届骑兵游行上，它戴着马鞍但却没有骑手。

The horse came back riderless .

那匹马无人骑而自己回来。

Sometimes a horse without a rider also takes part in a funeral . The best known riderless horse was black jack .

有时,无人骑乘的马也参加葬礼,最出名的无人乘马是黑杰克.