在朝堂上也可以当一名隐士，何必非要到深山老林中去呢？
The human mind is so complex and things are so tangled up with each other that, to explain a blade of grass, one would have to make a diagram of the universe.
我们这个时代最大的挑战不是技术上的，而是伦理上的。
Some of life, you have to go to the great challenges.
The laws of physics are universal, and testing them in extreme environments like the galactic center is essential.
Every decision we make today shapes the forests of tomorrow.