一个国家制度的质量是其长期经济表现的最重要决定因素。
The quality of a country's institutions is the single most important determinant of its long-term economic performance.
Coal has been the backbone of industrial progress, but its future must balance economic needs with environmental responsibility.
身体记得头脑试图忘记的事。
有时候旅程中最难的部分是相信你值得这次旅行。