instruments. A melody expresses abstract artistic conception or emotion. The explanation ability plays the key role in the externalization and internalization from one form of expression to another. Writers express meaning in popular symbolic languages through context. In the same language, readers understand the meaning of the scenario and contents in text. Translators explain the semantics of one language in the other language based on the knowledge and culture of using languages and the relationship between languages. Mathematicians use symbols, relations, number and formulations to exactly express knowledge and theory. An axiom system is understood and developed on a set of primitive concepts and axioms such as point, line, surface and solid in Geometry. Telephone and telegraphy make the worldwide analogue signal interconnection network. The telephone enables people to talk to each other directly in natural language, but the telegraphy needs translators to codify the semantics at t...