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Some propose storing the CO2 in coal mines or liquid storage in the ocean, Shell favors storing CO2 in deep geological structures such as saline(盐的) formations and exhausted oil and gas fields that exist throughout the world.
出自-2012年6月阅读原文
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"Using existing civil society structures or networks is a more effective way of creating change...and obviously trade unions are one of the biggest civil society networks in the UK," he says.
2015年12月六级真题（第二套）阅读 Section B
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After that I'll outline the new company's structures and who's going where.
2019年6月六级真题（第二套）听力 Section A
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Although many of the churches appear from the outside to be complex structures, they normally feature only a single storey but numerous different roof levels.
2019年12月六级真题（第一套）听力 Section C
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Brittleness remains a problem when building steel structures in cold conditions, such as oil rigs in the Arctic.
2019年6月六级真题（第三套）阅读 Section A
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But now, with only 30 wooden churches remaining and their condition deteriorating, experts are working to preserve the structures for future generations.
2019年12月六级真题（第一套）听力 Section C
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They lack water-storing structures, and their existence on rock faces prevents them from tapping groundwater, so they have instead developed the ability to change their metabolism.
2018年6月六级真题（第一套）阅读 Section B