Should the text be upper case or mixed case?
文本是否应大写或混合使用大小写？
Listing 3 shows the code for one of two listeners that receive the CaseModel delivered through the message bus and convert the provided text to upper and lower case.
清单3显示了两个监听器中其中一个监听器的代码，该监听器接收通过消息总线传送的CaseModel，然后将提供的文本转换为大写体和小写体。
This pencil case is not the same as other pencil case, its upper right there is a small box, this box is a miniature computer, it can store text information.
这个文具盒跟别的文具盒不一样，它的右上方有一个小方框，这个小方框是台微型计算机，它可以储存文字信息。
You can use menu commands or keyboard shortcuts to convert the case of selected text to all upper case or to all lower case.
您可以使用菜单命令或键盘快捷键将选定文本的大小写转换为全部大写或全部小写。
You can use menu commands or keyboard shortcuts to convert the case of selected text to all upper case or to all lower case.
您可以使用菜单命令或键盘快捷键将选定文本的大小写转换为全部大写或全部小写。
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