理解布莱克-斯科尔斯模型的关键在于认识到它是基于对冲以消除风险的理念。

Let us be grateful to people who make us happy, they are the charming gardeners who make our souls blossom.

Coal enterprises must enhance their sense of social responsibility and achieve the unity of economic and social benefits.

Ocean conservation isn't about limiting development, but enabling longer-term development.

她太怪了，我们无法想象自己与她扯上关系，她的语调令人发噱，来自一个奇怪的地方，我们与她毫无关联。当你认为你与这个人毫无关联时，你便不会嫉妒。越是两个年龄、背景相近的人，越容易陷入嫉妒的苦海，所以千万避免去参加同学会。因为没有比同学，更强烈的参照点了。

Writing is a matter of finding a voice, and then having the courage to use it.