英语语法分析

Look, he wears a red belt, so he must be a very good judoka.

看，他系的是红带，所以他肯定是柔道高手。

To win the contest a judoka must score an Ippon (a degree equalling 10 points) by using a successful technique.

为了赢得比赛，选手必须利用技巧得一胜（一胜相当于10分）。

Ryan and his older brother Reno, a decorated judoka in his own right, share a house there and Ryan was often his brother's sparring partner.

他和哥哥里诺合住一栋房子。里诺也是一名不错的柔道手，经常充当瑞安的陪练。