The hierarchy of central places reflects the hierarchy of goods and services offered.
中心地的等级反映了所提供的商品和服务的等级。
预测未来的最好方法就是创造未来。
The story of chemistry is the story of humanity’s quest to understand the world.
"The only way to get rid of a temptation is to yield to it."
小说的伟大之处在于它让一切变得有趣。