非打印字符：某个特殊字符，如制表符或者段落截止符，通常隐藏不能被打印但可显示出来。
A special character, for example tabstop or paragraph break that is normally hidden and cannot be printed, but which can optionally be displayed.
大写键可以直接打印，键盘驱动程序可以对很多更为特殊的情况进行编码，但是其模型是相同的：按下一个键就代表输入某个特定的字符。
The key caps may be printed differently, and the keyboard driver may encode a few more special cases, but the model is the same: Press a key to type a specific character.
如果采用特殊编码的某个字符的长度跨越了多个字节，则基于字符的字符串函数可以将每个字符处理为一个单元而不是一个字节序列。
If a character in a particular encoding spans multiple bytes, the character-based string functions can process each character as a single unit as opposed to a sequence of bytes.
毫无疑问，需要特别注意才可以发现，探究某个字符的等式和它的特殊含义极为重要。
Undoubtedly it is not without special attention to note that looking into an equivalence of a particular character and its particular meaning is critically important.
毫无疑问，需要特别注意才可以发现，探究某个字符的等式和它的特殊含义极为重要。
Undoubtedly it is not without special attention to note that looking into an equivalence of a particular character and its particular meaning is critically important.
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