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Sometimes they roused for material activity but that was growing rarer.

偶尔被唤醒进行某些实际活动，但这已经越来越少见了。

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The latter two sources are limited to those few areas where surface water seeps down through underground faults or fractures to reach deep rocks heated by the recent activity of molten rock material.

后两种来源局限于少数区域，在这些区域，地表水通过地下断层或断裂往下渗透，从而接触到被近期的熔岩活动加热的深层岩石。

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Kotkin says that sprawl cities involved in material things drive economic activity.

FORBES: Suburbs Or Cities? Extraction Or Ideas?

It is one of the most important indicators of the SNA that displays the final result of the production activity both in material production and non-material services.

UNESCO: Belarus: Report: Part I: Descriptive Section

If granted the land would be protected in law from development or any activity which would cause material harm to it.

BBC: Tesco sign