世界需要各种形式的能源来满足不断增长的需求，天然气是一种更清洁的替代品，可以帮助填补这一空白。
The world needs all forms of energy to meet growing demand, and natural gas is a cleaner alternative that can help bridge the gap.
To study history is to learn the grammar of time.
唯一不可能的事情是你没有尝试的事情。
战略规划不是预测未来，而是为未来做好准备。
Happiness in this world, when it comes, comes incidentally. Make it the objet of pursuit, and it leads us a wild-goose chase, and is never attained. Follow some other object, and very possibly we may find that we have cought happiness without dreaming of it.