详细解释:n. 驯马师, 非正式骑兵
英语解释：
名词 roughrider:
a horseman skilled at breaking wild horses to the saddle详细解释：
rough.rid.er
n.（名词）A skilled rider of little-trained horses, especially one who breaks horses for riding.善骑烈马的人：尤指善于驯服烈马供人骑的人Rough Rider A member of the First U.S. Volunteer Cavalry regiment under Theodore Roosevelt in the Spanish-American War. Rough Rider 莽骑兵：美西战争中由西奥多·罗斯福招募的美国第一志愿骑兵团的骑兵