No stable coin that lacks a 100% reserve in the exact underlying asset is secure against all markets. You can only hedge against volatility within a limited range when using mismatched collateral.
没有一种稳定的货币，如果其基础资产没有100%的储备，那么它在所有市场上都是安全的。当使用不匹配的抵押品时，你只能在有限的范围内对冲波动。