"Matching methods can be a powerful tool when randomization is not possible."
当随机化不可行时，匹配方法可以是一个强大的工具。
The customer may not always be right, but they are always the customer.
最坚固的容器不仅由钢铁制成，更由远见和团队合作打造。
The sun is our most powerful tool in Africa. We must learn to work with it, not against it.
作为导演，你必须既是领导者又是倾听者。
The only way to do great work is to love what you do.
The intellect is illuminated by the One as if it were the sun.