问题的数学表述通常比其解决方案更重要，后者可能仅仅是数学或实验技巧的问题。

Sustainability is not an option—it's a responsibility we owe to the next generation.

We are all the heroes of our own stories.

The dairy industry must evolve to meet the needs of the next generation.

比被人议论更糟的是无人议论。