"Innovation is the central issue in economic prosperity."
The beauty of mathematics lies in its simplicity and depth.
释义：决策者常与真实苦难保持冷酷的距离。
One often calms one's grief by recounting it.
广泛地学习，专心致志，恳切地求教，多思考当前的实际问题，仁德就在其中了。