curl --request GET \
  --url https://openapi.akool.com/api/open/v3/language/list \
  --header 'x-api-key: <api-key>'

{
  "code": 123,
  "msg": "<string>",
  "data": {
    "lang_list": [
      {
        "lang_name": "<string>",
        "lang_code": "<string>",
        "url": "<string>"
      }
    ]
  }
}