rider
n
1 person who rides a horse, bicycle, etc 骑马、 骑自行车等的人
a poor, an excellent, an average, etc rider 骑术不佳、 极好、 一般...的人
She's no rider, ie cannot ride well. 她不善骑马.
2 ~ (to sth) additional remark following a statement, verdict, etc 供述、 裁定等後面附加的评论; 附文
We should like to add a rider to the previous remarks. 我们想在原有的意见後面再加上一条. riderless adj without a rider 无骑乘者的
a riderless horse 没人骑的马.