他正骑着马寻找那座城堡。He was riding on his horse looking for the castle.他们看见15名警察骑着摩托车排成V字形前行。They saw a squadron of fifteen motorcycle policemen driving in V-formation.过去有成群结队的年轻人骑着摩托车四处游荡。There were gangs of kids on motorbikes r...