"base isolation" meaning in English

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  "lang_code": "en",
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        {
          "kind": "topical",
          "langcode": "en",
          "name": "Buildings",
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          "name": "Earthquake engineering",
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        "A collection of a building’s structural elements resting on its foundation to provide partial separation of the building from shaking ground thus upgrading the building's seismic fitness. For video demonstration, click here: http://www.youtube.com/user/vshustov#p/f/11/ZqlXp3czrrM"
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      "id": "en-base_isolation-en-noun-T2NVNJFv",
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          "building",
          "building"
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        [
          "foundation",
          "foundation"
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          "partial",
          "partial"
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        [
          "separation",
          "separation"
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          "shaking ground",
          "earthquake"
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          "upgrading",
          "upgrading"
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          "lang": "Japanese",
          "roman": "menshin",
          "sense": "Translations",
          "word": "免震"
        }
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  "word": "base isolation"
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        "A collection of a building’s structural elements resting on its foundation to provide partial separation of the building from shaking ground thus upgrading the building's seismic fitness. For video demonstration, click here: http://www.youtube.com/user/vshustov#p/f/11/ZqlXp3czrrM"
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          "building",
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          "foundation",
          "foundation"
        ],
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          "partial",
          "partial"
        ],
        [
          "separation",
          "separation"
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        [
          "shaking ground",
          "earthquake"
        ],
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          "upgrading",
          "upgrading"
        ]
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        "uncountable"
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      "word": "免震"
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  "word": "base isolation"
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