Environmental stewardship is not optional - it's our responsibility to future generations.

International politics is a ruthless and dangerous business, and it is foolish to expect states to behave according to moral principles.

大型工业企业是美国经济中最强大的机构，其管理者是最具影响力的经济决策群体。

但是，假如你驯服了我，我们就彼此需要了。对我而言，你就是举世无双的；对你而言，我也是独一无二的……

Resource development must balance economic benefits and ecological protection to achieve sustainable development.

Ignoring isn’t the same as ignorance, you have to work at it.

逝者并未离去，他们是我们的一部分。