商业的目的是产生积极的影响,而不仅仅是利润。
Every decision we make today impacts the next generation.
The only way to learn mathematics is to do mathematics.
A good story is one that stays with you long after you've finished reading it.
经济景观是一个由不同等级的中心地组成的系统,每个中心地为特定区域服务。