The modern world has made us free, but it has also made us miserable.
我只希望在自己衰老前退休,否则我只会成为累赘。
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。
Collaboration across borders is essential to solving global food challenges.