Names must begin with an alphabetic character, not a number or symbol.
名称只能以英文字母开始，不能是数字或符号。
The first character of the string must be an alphabetic character.
字串的第一个字元必须是字母字元。
A coded character set whose character set is an alphabetic character set.
一种编码字符集，它的字符集是一种字母字符集。
A coded character set whose character set is an alphabetic character set.
一种编码字符集，它的字符集是一种字母字符集。
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