对于单字节字符编码模式，一个字节组成一个字符，单字节字符串的长度与字符串的字节长度相同。

In the case of a single-byte character encoding scheme, a single byte constitutes a character and the length of a single byte string is the same as the byte length of the string.

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标准 ASCII 为英语语言中的一个单字节字符分配一个数值，比如十进制格式的 0 到 127。

Standard ASCII assigns a single-byte character in the English language to a numeric value, such as 0 to 127 in decimal format.

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在图6中，搜索第三个字节后的字符，如果所有的字符都是单字节字符的话应该搜索到第二次出现的“a”字符。

In Figure 6, shows a search for the character after the third byte, which would have been the second occurrence of the character "a" if all were single byte characters.

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