This, for those as yet unaware of such a disadvantage, refers to discrimination against those whose surnames begin with a letter in the lower half of the alphabet.
对于那些还没有意识到这种不利条件的人来说，这指的是对那些姓氏以字母表下半部分的字母开头的人的歧视。
必须以字母开头。
For instance, user names typically begin with a letter.
例如，用户名通常以字母开头。
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