RSS 文档中 language 标签中的可选值

Afrikaans: af

Albanian: sq

Basque: eu

Belarusian: be

Bulgarian: bg

Catalan: ca

Chinese (Simplified): zh-cn

Chinese (Traditional): zh-tw

Croatian: hr

Czech: cs

Danish: da

Dutch: nl

Dutch (Belgium): nl-be

Dutch (Netherlands): nl-nl

English: en

English (Australia): en-au

English (Belize): en-bz

English (Canada): en-ca

English (Ireland): en-ie

English (Jamaica): en-jm

English (New Zealand): en-nz

English (Phillipines): en-ph

English (South Africa): en-za

English (Trinidad): en-tt

English (United Kingdom): en-gb

English (United States): en-us

English (Zimbabwe): en-zw

Estonian:  et

Faeroese: fo

Finnish: fi

French: fr

French (Belgium): fr-be

French (Canada): fr-ca

French (France): fr-fr

French (Luxembourg): fr-lu

French (Monaco): fr-mc

French (Switzerland): fr-ch

Galician: gl

Gaelic: gd

German: de

German (Austria): de-at

German (Germany): de-de

German (Liechtenstein): de-li

German (Luxembourg): de-lu

German (Switzerland): de-ch

Greek: el

Hawaiian: haw

Hungarian: hu

Icelandic: is

Indonesian: in

Irish: ga

Italian: it

Italian (Italy): it-it

Italian (Switzerland): it-ch

Japanese: ja

Korean: ko

Macedonian: mk

Norwegian: no

Polish: pl

Portuguese: pt

Portuguese (Brazil): pt-br

Portuguese (Portugal): pt-pt

Romanian: ro

Romanian (Moldova): ro-mo

Romanian (Romania): ro-ro

Russian: ru

Russian (Moldova): ru-mo

Russian (Russia): ru-ru

Serbian: sr

Slovak: sk

Slovenian: sl

Spanish: es

Spanish (Argentina): es-ar

Spanish (Bolivia): es-bo

Spanish (Chile): es-cl

Spanish (Colombia): es-co

Spanish (Costa Rica): es-cr

Spanish (Dominican Republic): es-do

Spanish (Ecuador): es-ec

Spanish (El Salvador): es-sv

Spanish (Guatemala): es-gt

Spanish (Honduras): es-hn

Spanish (Mexico): es-mx

Spanish (Nicaragua): es-ni

Spanish (Panama): es-pa

Spanish (Paraguay): es-py

Spanish (Peru): es-pe

Spanish (Puerto Rico): es-pr

Spanish (Spain): es-es

Spanish (Uruguay): es-uy

Spanish (Venezuela)es-ve

Swedish: sv

Swedish (Finland): sv-fi

Swedish (Sweden): sv-se

Turkish: tr

Ukranian: uk