地质学家说，还存在着其他尚未探明的储量，这可能意味着在数千年的时间内，世界都不会用完碳酸钾。

Geologists say that the existence of other, untapped deposits probably means that the world won't run out of potash for thousands of years.

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认为语义不清，有信息没有翻出来：block是“区块”，而不是泛泛的大片区域，尽管唯一探明了的储量巨大的区块由雪佛龙所有，但还存在大量未探明的储量。

Though Chevron of America has rights to the only block where large proven reserves exist, much more oil is expected to be found.

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随着钻井技术，特别是充满争议的水力压裂法(又称破裂法)的广泛采用。已探明的天然气储量不断增加。

Thanks to new drilling technology, and in particular a controversial process called hydraulic fracturing or "fracking," the size of the proven reserves is growing.

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