最坚强的人是那些经历过最多但仍然选择去爱的人。
The future of farming lies in balancing productivity with environmental responsibility.
I believe in love, but I also believe in protecting my heart.
The things you do in your 20s will shape your future.
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估计几个关键参数,尤其是波动率。