创建一个虚构的本地语言环境，称为“en - num”(添加其他locale文件夹的一个兄弟文件夹)。

Create a dummy locale, called "en-num" (add a folder as a sibling of the other locale folders).

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一个资源包是命名相同的一组文件，其中的每个文件都适用于特定的一个本地语言环境。

A resource bundle is a group of files, all named the same, in which each file is applicable for a specific locale.

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每次添加或更改字符串时，都应当重新生成消息文件，否则将在目标语言环境显示未翻译的新文本。

Every time strings are added or changed, the message file should be regenerated, or the new text will appear untranslated in the target locales.

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