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最近一次埃亚·菲亚·德拉火山喷发，从到1821年底到1823年初期间，也有十分黏稠的熔岩。

Eyjafjallajokull's most recent previous eruption, from late 1821 to early 1823, also had quite viscous lava.

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如果将黏稠的“超重”石油近乎无限的供应包含在内，那么委内瑞拉则拥有全球最大的石油储量，因而扩大生产的潜力巨大。

There is also huge potential to expand production: if you include its near-endless supply of treacly “ultra-heavy” oil, Venezuela has the world's biggest reserves.

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