"悠久" meaning in 日语

{
  "categories": [
    {
      "kind": "other",
      "name": "待分類的漢語詞",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "日語",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "漢語",
      "parents": [],
      "source": "w"
    }
  ],
  "lang": "日语",
  "lang_code": "ja",
  "pos": "unknown",
  "senses": [
    {
      "glosses": [
        "悠久【ゆうきゅう】\n名·形动 悠久，久远。\n中国の歴史は悠久だ\n中国的历史悠久。"
      ],
      "id": "zh-悠久-ja-unknown-cHnLvT4T"
    }
  ],
  "word": "悠久"
}

{
  "categories": [
    "待分類的漢語詞",
    "日語",
    "漢語"
  ],
  "lang": "日语",
  "lang_code": "ja",
  "pos": "unknown",
  "senses": [
    {
      "glosses": [
        "悠久【ゆうきゅう】\n名·形动 悠久，久远。\n中国の歴史は悠久だ\n中国的历史悠久。"
      ]
    }
  ],
  "word": "悠久"
}