好的研究关键不仅在于方法,还在于问题的清晰性和数据的质量。
我的动力来自于对这项运动的热爱。
生命是脆弱的,没人能保证明天,所以请全力以赴。
We have a responsibility to future generations to leave the planet in better shape than we found it.
The past is always with us, for it feeds the present.
The modern state is characterized by its ability to concentrate and use power effectively.