当调用标记为条件的方法时，指定的预处理符号的存在或不存在决定是否包含或省略此调用。
When a method marked as conditional is called, the presence or absence of the specified preprocessing symbol determines whether the call is included or omitted.
源文件中的这个点通常由一个词素进行标记，而预处理程序不会使用该词素作为一个语言符号，这表示它并不是一项预处理程序指令。
This point in the source file is usually marked by a lexeme that is not consumed as a token by the preprocessor, meaning one that is not a preprocessor directive.
预处理数字符号未曾种类或值；种类或值将在向整数文字量或浮点文字量获胜转换（作为第7阶段的一局部，2.1）尔后获得。
Preprocessing number does not have a type or a value; it acquires both after a successful conversion (as part of translation phase 7, 2.1) to an integral literal token or a floating literal token.
符号的大小归一化是数学表达式识别的一种很常见的预处理方法，它对于提高符号的识别率具有重要的意义。
The size normalization of notations is a common pretreatment method in mathematical expression recognition, and it has a great significance to enhance the efficiency of notation recognition.
未定义的符号与预处理器指令一起使用。
A symbol that was not defined was used with a preprocessor directive.
因为%被宏预处理器广泛使用，你要确保有符号或无符号求余运算符应该紧跟着空格。
Since the % character is used extensively by the macro preprocessor, you should ensure that both the signed and unsigned modulo operators are followed by white space wherever they appear.
什么符号出现在活跃的预处理器指令在给定配置?。
What symbols would appear within active preprocessor directives under a given configuration?
即，不应将变量名传递到预处理器指令，并且只能用预处理器指令计算符号。
That is, a variable name should not be passed to a preprocessor directive and a symbol can only be evaluated by a preprocessor directive.
即，不应将变量名传递到预处理器指令，并且只能用预处理器指令计算符号。
That is, a variable name should not be passed to a preprocessor directive and a symbol can only be evaluated by a preprocessor directive.
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