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The diacritics on a, o, or u produce new letters.
o 或 u 上的变音符会产生新字母。
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Diacritics that produce new letters are distinguished.
能产生新字母的变音符是有区别的。
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Diacritics have different purposes in different languages.
变音符在不同的语言中有不同的用途。
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However, the search is case-insensitive, and some normalization applies (see Diacritics and Punctuation).
然而,这个搜索是大小写无关的,并且应用了某些标准化(见 附加符号 和 标点符号)。