当前有13个根域名服务器，将域名转为IP号，并且让我们能够通过庞大的网络彼此交流。
There are some 13 root name servers that resolve domain names into IP Numbers, and therefore enable us to communicate across this large network.
与根域名服务器等顶级域相比，本地的权威名字服务器更易于发生设备故障和遭受恶意攻击。
Comparing with the top-level domains (TLD) such as the root servers, the local authoritative servers were more vulnerable to device failures and malicious attacks.
与根域名服务器等顶级域相比，本地的权威名字服务器更易于发生设备故障和遭受恶意攻击。
Comparing with the top-level domains (TLD) such as the root servers, the local authoritative servers were more vulnerable to device failures and malicious attacks.
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