The server must produce the entire string, except for the first and last lines, because the current user locale might require these messages (and only server-side code can accomplish this).
服务器必须生成整个字符串，第一行和最后一行除外，因为当前的用户语言环境可能要求使用这些消息(并且只有服务器端代码能完成这项工作)。
The first section (lines 001 and 002) simply prepares the environment by importing the necessary run time elements (the require method loads and executes the named library).
第一部分(行001和002)只是准备环境：导入必要的运行时元素(require方法加载并执行已命名库)。
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