如果要推出11,700个英文在线旅游网站，还要包含西班牙语跟汉语的子域名，又是什么概念？
But, what about launching 11, 700 English-language online travel websites, plus sub-domains in Spanish and Chinese?
现有的互联网顶级域名体系只支持包括26个英文字母、连字符和阿拉伯数字0至9在内的37个字符。
The existing system of Internet top-level domain name including the support of only 26 English letters and Arabic numerals and a hyphen 0-9, 37 characters.
顶级域名cn之下，设置“类别域名”和“行政区域名”两类英文二级域名。
III. Under the top-level domain name "CN", two kinds of English second-level domain names of "category domain name" and "administrative area domain name" are set up.
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