Sustainability must be at the core of every chemical manufacturing process, or we risk leaving behind a world beyond repair.

在我看来，最完美的教育是这样的理解练习，它最适合于加强身体和形成心灵。

The world of the happy is quite another than that of the unhappy.

林业的未来在于平衡经济增长与生态保护。

Our miners are the hardest working people in America.

民主是最糟糕的政府形式，除了所有其他时不时被尝试过的形式。