不考虑以后怎样，只做一次的交易（多用于比喻）
一锤子买卖意味着你不能退货或是换货。
然而，这个市场一直是“一锤子买卖”的交易。
However, that marketplace has been a "one and you're done" affair.
尽可能频繁地迭代化博弈游戏：确保合作不是基于一锤子买卖。
Iterated the Game as much as possible: Ensure the collaboration is not based on a one-off interaction.
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