Initially, it will allow internationalized domain names (IDNs) using scripts such as Chinese, Korean or Arabic for the country code designators at the end of an address name.

在最初阶段，该机构将允许国际化域名在地址结尾使用用汉语、韩语或阿拉伯语表示的国家域名。

youdao

Apparently a single missing full stop at the end of the code meant that the domain Name Systems (DNS) failed to recognise.se as the "top-level" (country-wide) domain.

很显然，程序末尾仅少了个句号使得域名系统(DNS)无法识别“。se”了，“。se”是瑞典的“顶级”(国家)域。

youdao

The standard Russian country code top-level domain ".ru" has been joined by the Cyrillic alphabet rendering of ".rf".

BBC: Russia country profile