I want to stand as close to the edge as I can without going over. Out on the edge you see all kinds of things you can't see from the center.
Traveling is for me a source of rejuvenating vitality.
I don't think you should ever have to apologize for your excitement.
The human heart is a complex and often contradictory thing.
我们必须超越当前的技术,以满足未来的能源需求。