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地球上已知的天然气储量7千万亿立方米中的大部分依旧都封闭于边远地区的地下。但要开发这些财富则花费甚多,因为需要建造大量长距离管道。
Most of the 7,000 trillion cubic meters of known natural gas reserves on Earth are still confined to the ground in remote areas. However, it takes a lot to develop these wealth because of the need to build a large number of long-distance pipelines.