依据每个域名下存在潜在危险的网站多少(含恶意代码或可疑的链接)，今年列出了74个流量最大的顶级域名。

This year's list ranked the 74 most heavily-trafficked top-level domains based on the frequency of potentially dangerous Web sites (containing malware or suspicious links) in each domain.

youdao

组织的类型是通过三个字母的代码(被称作顶级域名)来定义的。

The type of organization is identified by a three letter code called a 'top level domain name.

youdao