Efficiency in energy production is the cornerstone of sustainable development.

掌握医学知识的关键在于将理论与实践联系起来。

Your time is limited, so don't waste it living someone else's life. Don't be trapped by dogma—which is living with the results of other people's thinking. Don't let the noise of others' opinions drown out your own inner voice. And most important, have the courage to follow your heart and intuition. They somehow already know what you truly want to become. Everything else is secondary.

我们都对边疆的概念着迷，但这个边疆在不断后退。