A fool who knows he is a fool is for that very reason a wise man. The fool who thinks he is wise is the one to be called a fool.
行业与环保人士之间的合作不仅是可能的，而且是必不可少的。
Even in abstraction, mathematics has profound real-world applications.
可持续农业不是成本，而是我们能做的最明智投资。