Run it twice – GTO Wizard

In cash games, when players are all-in before the river, the option to deal each of the remaining cards twice, and thus divide up the pot based on who wins on each runout. Running it twice is done to reduce variance. Running it twice may not be offered by all casinos or online poker rooms. This does not improve the expected value for either player.

什么是 Run it twice （扑克术语）？