"natural radioactivity" meaning in 英語

{
  "categories": [
    {
      "kind": "other",
      "name": "待分類的英語詞",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "拉丁文字",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "環境",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "英語",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "英语名词",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "電機工程專有名詞",
      "parents": [],
      "source": "w"
    }
  ],
  "lang": "英語",
  "lang_code": "en",
  "pos": "unknown",
  "senses": [
    {
      "glosses": [
        "===名詞===\nnatural radioactivity\n#[環境]天然放射性；自然放射性，主要來自於鈾的輻射，在石頭、土壤、建築材料等物質中也有少許含量。"
      ],
      "id": "zh-natural_radioactivity-en-unknown-ahpOEQ2w"
    }
  ],
  "word": "natural radioactivity"
}

{
  "categories": [
    "待分類的英語詞",
    "拉丁文字",
    "環境",
    "英語",
    "英语名词",
    "電機工程專有名詞"
  ],
  "lang": "英語",
  "lang_code": "en",
  "pos": "unknown",
  "senses": [
    {
      "glosses": [
        "===名詞===\nnatural radioactivity\n#[環境]天然放射性；自然放射性，主要來自於鈾的輻射，在石頭、土壤、建築材料等物質中也有少許含量。"
      ]
    }
  ],
  "word": "natural radioactivity"
}