函数的概念在数学中是基础的，而λ演算提供了一种形式化这一概念的方法。

战略的本质是选择不做什么。

The role of oil and gas companies is evolving, and we must evolve with it.

The future belongs to those who can balance profitability with environmental responsibility.

Collaboration is the foundation of progress in science—no one works alone.

每个故事都有两面——表面上的和隐藏在下面的。