Class library plays the vital role in the construction of compiler by object-oriented method and lexical analysis class library is an important part of object-oriented compiling class library.
类库在编译程序的面向对象构造过程中起重要作用，词法分析类库是编译类库的重要组成部分。
2
Based on the lexical origins, the relations between subject and object, and value cognizance, it is concluded that value subject means the people or society.