All these keys are used to protect the internet's domain name system.

这些密钥都是用来保护互联网域名系统的。

Deep in its architecture are computers known as domain name system (DNS) servers.

网络架构的底层是一种叫做域名系统（domain name system，DNS）服务器的计算机系统。

The domain name system (DNS) controls how internet addresses work, but not what a website or database contains.

域名系统（DNS）控制互联网地址的工作，但不是一个网站或数据库包含的。

A domain name system, or DNS, is like a phone book organizing the internet locations of each website.

域名系统(DNS)就像一本电话簿，记录着每个网站在互联网上的位置。