生活是世界上最罕见的事情。大多数人只是存在,仅此而已。
Every scientific advancement forces us to confront new ethical questions.
计算理论的美在于其抽象和概括的能力,将具体问题转化为通用解决方案。
The Celts have a close affinity with nature, and we have a great respect for the elements.