Sustainable infrastructure should balance economic, social and environmental benefits.
有一个人从天堂来到人间旅游，他所使用的是有效三十天的减价票，他试图要把他的回程票卖掉。
Innovation is not just about creating new products; it's about rethinking how we solve old problems.
创新不仅仅是创造新产品；它关乎我们如何重新思考解决旧问题的方法。
The past is always tense, the future perfect.
The study of consciousness must be free from all metaphysical influences.
We are at a unique stage in our history. Never before have we had such an awareness of what we are doing to the planet, and never before have we had the power to do something about it.