中心地的等级越高,其数量越少,影响范围越大。
碎片化的信息流,让我们失去了理解的连贯性。
It is one of the superstitions of the human mind to have imagined that virginity could be a virtue.
当我们保护海洋生态系统时,我们最终是在保护人类的生计。
True scientific progress is achieved not by mere accumulation of facts, but by the continuous refinement of theories and models.