The imperative form of the verb optates, exhorts, or commands.

动词的祈使形式选择、劝告或命令。

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Of course, it is absolutely imperative that Web sites store your password in encrypted form.

当然，各网站以加密形式存储你的密码是绝对必要的。

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The declarative information is transformed into an imperative form at compile-time, rather than each time it is used at runtime, resulting in faster code.

声明式信息在编译时转换为命令形式，而不是在运行时每次使用时进行转换，这使代码更快。

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