技术的改进使得在美洲页岩层以及类似地方的巨大天然气储量成为一个商业希望。

And technological improvements have made the huge reserves of gas in America, from shale beds and the like, a commercial prospect.

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其储量约100万立方米，商业开发价值超过15亿美元。

Its reserves of about 100 million cubic meters of commercial development worth more than 1.5 billion.

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