临时上场替换他人的不按排定顺序上场的the spot罚球点为防止受伤在场上保护运动员把台球放在置球点上
the spot penalty spot, which temporarily substitutes for others and does not follow the scheduled order, places the billiard balls at the ball placement point on the court to protect the athletes from injuries
以上为机器翻译结果，长、整句建议使用 人工翻译 。