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

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。

youdao

Once you have a root name established, add on extra fields to specify vocabulary names and version numbers.

在建立了根名称之后，添加额外的字段来指定词汇表名称和版本号。

youdao

There are some 13 root name servers that resolve domain names into IP Numbers, and therefore enable us to communicate across this large network.

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。

youdao

to do sqrt, or square root-- no, I'm going to square root use sqrt, that's the name I'm using here-- square root a hundred different places in some piece of code. Without function, I'd have to copy that piece of code everywhere.

让我做一下准备,想象一下我要调用sqrt或者-,不，我会调用sqrt函数,这是我在这里用的名字，我得把这段代码到处复制。

麻省理工公开课 - 计算机科学及编程导论课程节选

Improve physical security of critical systems, especially domain name and root servers.

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Getting its name from the sassafras tree root originally responsible for its unique flavour, root beer was an exclusively North American beverage until recently.

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Specifically, ICANN is responsible for coordinating the assignment of protocol parameters, overseeing the domain name system, allocating IP-address space and managing the root-server system.

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