期权定价理论是金融工程的主要理论基石。
Individualized educational program is a footstone of special education.个别化教育计划是特殊教育的基石。
Risk investment is the footstone of "silicon legend", which promotes the sustained boom of American economy.风险投资是美国“硅谷传奇”的基石,它推动了美国新经济的持续繁荣。