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.

youdao

我爸用电脑的唯一目的就是打红心大战，不知道为什么，每次我站在他后面观战，总是会发现大小写转换是开着的。

My dad only uses the computer to play poker and for some reason whenever I get on after him caps lock is always on, no idea why.

youdao

例如，预定义指令as_lower_d将输入流转换为小写(参见清单6)。

For instance, the predefined directive as_lower_d converts the input stream to lowercase (see Listing 6).

youdao

It's passing to this function called toupper, which if you've never used it it actually does what it says it makes it touppercase.

它把这个传递给toupper函数，如果你们使用过，它表示的是把小写字母,转换为大写字母。

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