解释中说

if interest rates decrease,his yield on the libor-base security will fall, but the decrease will be offset by gains on a long position in Eurodollor futures contract.

但是我认为

interest decrease 不是应该benefit short吗？它可以以高阶出借钱？

大家怎么认为呢？

据我的理解是；

whenever interest rates decrease, prices of (derivatives, bonds, etc.) increase.

thus, the short position's value decreases. this decrease will be offset by gains in long in E. futures

long in E futures为什么会gain啊？

interest 是下降的啊