令牌是单独的关键字、符号和标识符。
在语法测试模块研究中，采用计算机编译技术，并结合被测文件的结构特点，研究了对文件标识符、关键字等测试点的测试方法。
In the Syntax testing module, the testing method of file identifier, key word, etc, which adopts computer compile technology, combining the structure characteristic of examined file, is researched.
分为四类：标识符、关键字、运算符和分隔符 和 直接常量。
There are four classes: identifiers, keywords, operators and delimiters, and literals.
以下标识符用作保留字，或者叫做语言的关键字，并且不能作为普通标识符使用，而且它们必须像下面的那样严格拼写。
The following identifiers are used as reserved words, or keywords of the language, and cannot be used as ordinary identifiers. They must be spelled exactly as written here.
以下标识符用作保留字，或者叫做语言的关键字，并且不能作为普通标识符使用，而且它们必须像下面的那样严格拼写。
The following identifiers are used as reserved words, or keywords of the language, and cannot be used as ordinary identifiers. They must be spelled exactly as written here.
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