If the value of the mortgaged property exceeds that of the claim secured, the surplus may be mortgaged again, but not in excess of the surplus.
财产抵押后,该财产的价值大于所担保债权的余额部分,可以再次抵押,但不得超出其余额部分。
2
Economists call this phenomenon "consumer surplus" - the excessvalue of a good beyond the actual price a consumer pays; what you would have been willing to pay, in other words, if you had to.