Headings should be in upper case.
标题应该大写。
The appearance of a word in upper case between lower caps is usually ugly.
在小写字母之间出现大写单词通常很难看。
Also, the first character is in upper case.
同时，第一个字符是大写。
Second, the query refers to the table and column names in upper case.
其次，查询以大写形式引用表和列的名称。
The values in this element differ in terms of upper and lower case.
此元素中的值在大小写方面并不一致。
In this case, a root class (upper-left corner in red) is where the problem originated.
在本例中，一个根类(左上角用红色标明的那个类)是问题的发源地。
You can use upper and lower case characters in your password.
设定密码时，大、小写字母都可以用。
Additionally, all the lower case letters in the string must be converted to upper case.
此外，小写字母应该转化为大写字母。
Upper case and lower case can be freely used in expression;
大写和小写可以自由使用表达；
Upper case and lower case can be freely used in expression;
大写和小写可以自由使用表达；
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