套期保值者有责任注意外的样品性能，但没有样品性能已经发生了。

Hedgers are liable to pay attention to out-of-sample performance but not in-sample performance already occurred.

youdao

套期保值者有责任注意外的样品性能，但没有样品性能已经发生了。

Hedgers are liable to pay attention to out-of-sample performance but not in-sample performance already occurred.

youdao