这是一个含有定语从句的疑问句，where 'these successful individuals have paid' 修饰 the price，强调对隐性成本的追问。
When we see successful people, it is natural to feel a sense of envy. Seeing their power and fame, we often wish we could be one of them. However, Who truly knows the price these successful individuals have paid?
Top swimmer Michael Phelps once described his daily routine. He mentioned that he had to undergo incredibly rigorous training; even on Christmas Day, when others were enjoying family reunions, he was in the swimming pool, working tirelessly to make himself stronger. We often witness the glory of celebrities but tend to overlook their relentless hard work. They truly deserve their honors and the respect of others. If we aspire to achieve success, we must commit ourselves to hard work.
当我们看到成功人士时，难免会心生嫉妒。看着他们拥有的权力和名望，我们往往渴望也能成为他们中的一员。然而，谁能真正了解这些成功人士在背后付出了多少代价呢？
顶尖游泳运动员迈克尔·菲利普斯曾描述过他的日常生活。他提到自己必须进行极其艰苦的训练，即使在大家都在享受家庭团聚的圣诞节，他依然在游泳池中挥汗如雨，通过不断的锻炼来让自己变得更强。我们习惯于仰望名流的光辉时刻，却常常忽略了他们背后的艰辛努力。他们完全值得这份荣誉与尊重。如果我们也渴望成功，就必须脚踏实地地付出努力。
"Setbacks are essentially the tuition fees paid on the road to success."
"Only victory allows survival; only success has a price; only hard work brings rewards."
"Those who achieve great things in their careers often face sacrifices in life."
"Many people pay for their success with the happiness of their youth."
"Success requires a cost, and time is also a cost."