在物理学的世界里,我们经常发现最简单的问题最难回答。
In the world of physics, we often find that the simplest questions are the hardest to answer.
I'm the reason your daughter's so obsessed.
包装的未来在于既能保护产品又能保护地球的材料。
生活是一段旅程,而不是一个目的地。
The only time you should ever look back is to see how far you've come.
Every border implies the violence of its maintenance.