Business men play a mixed game of skill and chance, the average results of which to the players are not known by those who take a hand.
商人玩的是技巧和机会混合的游戏，玩家的平均结果并不知道那些参与其中的人。
英语百科
List of poker variants
The card game of poker has many variations, most of which were created in the United States in the mid-1900s. The standard order of play applies to most of these games, but to fully specify a poker game requires details about which hand values are used, the number of betting rounds, and exactly what cards are dealt and what other actions are taken between rounds.