Some infractions in this document refer to “sets” of cards. A set is a physically distinct group of cards defined by a game rule or effect. It may correspond to a specific zone, or may only represent a part of a zone. A set may consist of a single card.
本文档中的某些违规会提及“牌叠”之概念。
These infractions are IPG 2.2 Looking at Extra Cards, IPG 2.3 Hidden Card Error, and IPG 3.5 Deck/Decklist Problem.
这些违规包括2.2额外看牌、2.3非公开牌张失误、以及3.5套牌／套牌登记表问题。
所谓牌叠，是指由游戏规则或效应规定，有显著区隔的牌张组合。牌叠此概念可能对应某一特定区域，也可能只包含某一区域当中的一部分。一张牌也可构成牌叠。
A card may create sets briefly during their resolution (such as Fact or Fiction or Collected Company). If you are holding one or more cards, that’s a set. If you flipped over the top 3 cards of your library to reveal them, that’s a set. Other sets simply exist naturally in the game, such as your Library, Graveyard, Exile, and Hand. Just to be as clear as possible, it is also directly spelled out that a single card may be a set.
有些牌可能在其结算过程中临时创造牌叠（例如真伪莫辨或征召军伍）。如果你拿着一张或几张牌，这些牌就构成一个牌叠。如果你翻开你牌库顶的三张牌来展示它们，这些牌就构成一个牌叠。另一些牌叠自然地存在于游戏中，例如你的牌库、坟墓场、放逐区、或手牌。为了特地澄清，这里还直接说明了即使只有一张牌也可能构成一个牌叠。

Cards are considered to be part of a set until they join another set. There is no in-between state and any card that has not yet been seen is part of the previous set (unless the new set is hidden).
牌张在移入新的牌叠之前，视为在原来的牌叠之中。牌张不存在“移动中”之状态，任何还没有被看到的牌都属于之前的牌叠（除非新的牌叠也为非公开）。
This is just explicitly clear language to ensure that, no matter how hard you try, there will not exist a card without it being part of a set. Consider any unseen card as a part of the previous non-hidden set.
这句话是为了清楚地确保不会有一张不属于任何牌叠的牌出现。将没有被看到的牌视为之前非公开牌叠的一部分。