过去总是紧张的，未来是完美的。

我们必须建立一个没有经济支配的世界。

Climate change solutions begin with how we manage our forests.

The obsession with running is really an obsession with the potential for more and more life.

天然气是通往更清洁能源未来的桥梁，但我们必须负责任地跨越这座桥梁。