Sustainability isn't an option; it's a necessity for the future of energy.

郦波在讲座中引用马克·吐温的话并加以阐释

The characters I paint are not children, they have a rebellious spirit.

语言不仅仅是交流的工具；它是通往灵魂的桥梁。

The spread of liberal democracy around the world is not inevitable, but it is the most likely outcome.

画面不能太可信。