（4）对各场比赛之间可能的胜负情况的把握；
－－还是应该参照国际赌盘，but eventually bookmaker should estimate the bet flow on each teams and try to balance. A dynamic system will allow a floating payout ratio to offset the risk. If more people bet on germany, the payout ratio will be slightly lower. However, this does not allow transparency of the book and bring less fun than a open book.
