Twelve inmates have been killed during a riot at the prison.十二名囚犯在该监狱里的一次暴乱中丧生。
Last year 600 inmates rioted, starting fires and building barricades.去年600名囚犯闹事,放火并制造路障。
The protest exploded into a riot.抗议爆发成一场暴乱。