第三个方面就是根域名服务器，这些服务器如何接受管理和控制。

The third element is the root name servers, how these servers are managed and controlled.

youdao

在加载了所需的模式之后，您需要在LDAP目录中为您的根域名添加一个后缀。

Once the required schema is loaded, you need to add a suffix for your root domain name in the LDAP directory.

youdao

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.

youdao