例215　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.

【结构分析】这句话的主语是This，后面是插入语for those as yet unaware of such a disadvantage，后面是动词refers to，后面是宾语discrimination，后面是介词短语against those，后面是定语从句whose surnames begin with a letter in the lower half of the alphabet。

【亮点回放】此句话的亮点是个下定义结构，refer to这种结构用于解释读者不清楚的概念，而且还使用了定语从句whose，很经典。

【核心词汇】

unaware of　还不了解

such a disadvantage　这种危害

refer to　指的是

discrimination　歧视

surnames　姓氏字母

a letter in the lower half of the alphabet　字母表后半部分

【参考译文】对于那些还不了解这种危害的人来说，它指的是对姓氏首字母位于字母表后半部分的人的歧视。