Each preprocessing token that is converted to a token ( 2 . 6 ) shall have the lexical form of a keyword , an identifier , a literal , an operator , or a punctuator 每一个能被转换为标记（ 2 . 6 ）的预处理标记都应具有关键字，标识符，文字量，运算符，或标点的形式。
2.
Each preprocessing token that is converted to a token ( 2 . 6 ) shall have the lexical form of a keyword , an identifier , a literal , an operator , or a punctuator 每一个能被转换为标记（ 2 . 6 ）的预处理标记都应具有关键字，标识符，文字量，运算符，或标点的形式。
