During a bear market, the most common operation to protect this collateral is to pay off Dai loans and then close Vaults.
When a loan is repaid, Dai used is destroyed.
This is why during bear markets, the amount of Dai in circulation tends to decrease.
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在熊市期间，保护这些抵押品的最常见操作是偿还Dai贷款，然后关闭金库。
当一笔贷款被偿还时，它就会被销毁。
这就是为什么在熊市期间，Dai的流通量会减少。
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