The paper reports on our research to build machine translation markup language which is based on natural language processing and XML technology.

This paper makes an introduction of XML,the new markup language,its supreme advantages,challenges and prospect in comparison with the disadvantages of HTML.

The complete min-cut of the flow network induced from the finite state machine of a discrete event dynamical system is introduced so that the solution of the optimal supervisory control problem also includes the marked language.

SQL language(structured query language)is the standard language of database,choosed as a database teaching language,its outstanding advantage is that the definition of data,data query,data manipulation and control of the four major functions in the data integration.

The broad sense refers to literary language which can also be translated into standard language, but the narrow sense only refers to language used in literature, that is literary version language, which is written in literature by writers aiming at conveying feelings and meanings and showing creative ideas.

The article analyzes the skill and distinguishing feature of news title language in deliberating words , such as how to get fresh and fascinating , how find the exact word to narrate, and how to make the sentence pleasing to ear.