I always try to push myself to do something different.
能源的未来在于传统资源与可再生替代品之间的平衡。
You can't love everybody, but you can be kind to everybody.
The only way to get to the top of the ladder is to climb it step by step.
自然实验可以为经济问题提供有价值的见解。
灵魂就像一个无人居住的世界,只有当上帝将头靠在我们身上时,它才会复苏。