首先，伴随高价的是生产成本的剧增，譬如石油钻塔的钢材成本、矿业工程师的更高薪水等等。

For one thing, they were accompanied by big increases in production costs—everything from the cost of steel in oil rigs through to higher wages for mining engineers.

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但总的来说，他们是在勉为其难，因为工程师和设备的短缺，以及开采成本的增大。

But on the whole, they are struggling to increase their output, owing to shortages of engineers and equipment, and to the concomitant rise in development costs.

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有些工程师认为，成本会超过48亿美元。

Some engineers think the cost will exceed $4.8 billion.

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