The spoken word is immediate but lacks permanence.
口头之言便捷,但缺乏持久性。
《牛津词典》
Much of the world's great architecture has been constructed of stone because of its beauty, permanence, and availability.
世界上许多伟大的建筑都是用石头建造的,因为它美观、持久且容易找到。
When new or difficult material is presented, almost all listeners are faced with a challenge, because human's speech lacks the stability and permanence of the printed word.