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.

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暗示：使用大写字母和小写字母，数字，符号，如！

Hint: Use upper and lower case characters, Numbers and symbols like!

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暗示：使用大写字母和小写字母，数字，符号，如！

Hint: Use upper and lower case characters, Numbers and symbols like!

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