公允价值不能可靠取得的，按照名义金额计量。

If its fair value cannot be obtained in a reliable way, it shall be measured at its nominal amount.

沃利森说明，信用违约交换单每交易一次，其“名义金额”都要增加，即使风险的数量并没有改变。

Wallison shows that each time a cds is traded, the “notional amount” increases, even though the amount of risk is unchanged.