※ 引述《Zooplankton ()》之铭言：
: 前阵子玩遇到一个卖货的状况如下：
: 玩家A要卖一个需要两桶啤酒的木箱到交易所
: 该交易所有两个木箱的标记，且上面的公家啤酒皆尚未被消耗
: 此时的啤酒来源：
: 1. 只能消耗其中一个公家酒，另一个需要从场上取得，仅获得一次交易所bonus
: 2. 可以直接消耗两桶公家酒，并获得两次交易所bonus
: 我的倾向是1.的玩法，感觉上玩家必须选择其中一个木箱标记做交易，因此另一桶必须
: 要从场上取得，但不确定理解是否正确？
: 感谢大家
是1。我想规则应该写得满明确的。
规则书第8页，卖货的啤酒来源：
Beer may be consumed from any of the following sources:
1. Your unflipped Breweries (J). These do not need to be connected to the
location where the beer is required.
2. An opponent’s unflipped Brewery (K). These must be connected to the
location where the beer is required.
3. The space beside a Merchant tile that you are selling to (see “Action -
Sell”). When multiple beer barrels are required, each beer may be consumed
from a different source.
规则书第10页，卖货的步骤：
2. Choose 1 of your unflipped Cotton Mill, Manufacturer (C), or Pottery
tiles, that is connected to a Merchant tile featuring that industry’s icon
(D).
3. If there is a beer barrel (E) on the space beside the Merchant tile you
are selling to, you may consume this beer as part of the Sell action, and
collect the Merchant beer bonus (see “Merchant Beer Bonuses”).
……
5. You may go back to step 2 and repeat the process for each of your
unflipped Industry tiles (including those of a different industry).
a merchant tile that you are selling to, the space beside the merchant tile
都是明确的单数记载。
一个商品就是对应一个商人，不会对应两个商人。需要两个啤酒的木箱，若选择卖给左边
的商人，就是只能用左边商人的酒，不能用右边商人的酒(不论右边商人是否同样可接受
这个商品)。
需要两个啤酒的木箱，两个啤酒可以是不同来源没错 (合法来源包括来源1自己酒厂、来
源2他人酒厂、来源3商人)，但如果这个木箱是要卖给左边商人(卖货的步骤2是选择左边
商人)，则右边商人就不算是合法的来源3。
到卖货的步骤5，要卖另一个商品时，才会回到步骤2选择另一个商人，同样说明了一个商
品就是对应一个商人。
相关的BGG讨论文章可见：
1. https://bit.ly/3N9R5c9
摘录句子
If you are selling a good to a market that has multiple merchants that will
buy it, you can choose which merchant to use each time.
Each beer is associated with a specific merchant, not with the location as a
whole.
2. https://bit.ly/3ttFcWJ