"байн байн" meaning in Mongolian

{
  "forms": [
    {
      "form": "bajn bajn",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "mn",
        "2": "adverb",
        "head": "байн байн"
      },
      "expansion": "байн байн • (bajn bajn)",
      "name": "head"
    }
  ],
  "lang": "Mongolian",
  "lang_code": "mn",
  "pos": "adv",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Mongolian entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "often"
      ],
      "id": "en-байн_байн-mn-adv-k8aBSPSs",
      "links": [
        [
          "often",
          "often"
        ]
      ],
      "related": [
        {
          "roman": "ürgelž",
          "word": "үргэлж"
        }
      ]
    }
  ],
  "word": "байн байн"
}

{
  "forms": [
    {
      "form": "bajn bajn",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "mn",
        "2": "adverb",
        "head": "байн байн"
      },
      "expansion": "байн байн • (bajn bajn)",
      "name": "head"
    }
  ],
  "lang": "Mongolian",
  "lang_code": "mn",
  "pos": "adv",
  "related": [
    {
      "roman": "ürgelž",
      "word": "үргэлж"
    }
  ],
  "senses": [
    {
      "categories": [
        "Mongolian adverbs",
        "Mongolian entries with incorrect language header",
        "Mongolian lemmas",
        "Mongolian multiword terms",
        "Mongolian terms with redundant head parameter",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "glosses": [
        "often"
      ],
      "links": [
        [
          "often",
          "often"
        ]
      ]
    }
  ],
  "word": "байн байн"
}