原文: A Go string is thus a sequence of variable-width characters (each 1 to 4 bytes, see Ex. 4.6), contrary to strings in other languages as C++, Java or Python that are fixed-width (Java uses always 2 bytes). 因此改为 “Go 中的字符串里面的字符” 更合适。
勘误
估计是译者粗心了。