Basically, the PSM is a permissionless liquidity tool that works as an extremely efficient decentralized exchange to trade DAI for other stablecoins.
It keeps the price of DAI by enabling large amounts of permissionless liquidity.
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基本上，PSM 是一种无需许可的流动性工具，可作为一种极其高效的去中心化交易所，将 DAI 与其他稳定币进行交易。
它通过启用大量未经许可的流动性来保持 DAI 的价格。
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