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布莱克-斯科尔斯模型的美妙之处在于它将期权定价问题简化为几个可观察的变量。
You are not the opinion of somebody who doesn't know you or care about you.
The best way to find yourself is to lose yourself in the service of others.
I'm the worst thing since Elvis Presley, to do Black music so selfishly.