Research has show that a block of text in all capitals is harder to read than the same block in mixed capitals and lower-case letters.
研究表明，一段文本全部大写比同样文本大小写混合使用，更难读。
Capitals and small letters are known as upper case and lower case respectively.
西文大写字母和小写字母均分别称作西文大写字盘和西文小写字盘。
Capitals and small letters are known as upper case and lower case respectively.
西文大写字母和小写字母均分别称作西文大写字盘和西文小写字盘。
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