经济发展理论研究的是经济系统如何产生不断改变它的力量。
The theory of economic development is the study of how the economic system generates the forces which incessantly transform it.
I want to inspire people to follow their dreams.
小说中的每一个字都是迈向理解人类状况的一步。
Sorrow is hushed into peace in my heart like the evening among the silent trees.
求知若饥，虚心若愚。
建筑的未来在于既耐用又可持续的材料。