石油的真正成本不仅仅是每桶的价格,还包括环境和社会影响。
关于幸福,你只有在失去它的时候才知道你曾经拥有过。
每一个反应都是原子之间的对话。
The past is not a burden, but a foundation upon which to build.
Perception is the result of the activity of the five senses; through sensation, we come to know the world.