数学语言是一种由记号和符号所构成的语言。

The language of mathematics is one of signs and symbols.

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我们不应该从这种话语的影像，推断出意图以及意义，去说不是语言符号的记号是没有意义的。

We should not from such simulacra of words infer not only intention but meaning as well. It is meaningless to speak of marks that are not signs as language.

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扫描程序读取缓冲中的单个字符并返回解析器能理解的记号(称做标记)——如关键字、操作符及针对特定语言的标点符号。

A scanner reads in the individual characters of a buffer and returns symbols (called tokens) that the parser will understand — such as keywords, operators, and language-specific punctuation.

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