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求翻译.紧急.谢谢.There is a lot of luck in drilling for oil. The dr

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求翻译.紧急.谢谢.
There is a lot of luck in drilling for oil. The drill may just miss the oil although it is near; on the ather hand, it may strike oil at a fairly high level . When the drill goes down, it brings up soil. The samples of soil from various depths are examined for traces of oil. If they are disappointed at one place, the drillers go to another. Creat sums of money have been spent, for example in the deserts of Egypt, in “prospecting” for oil. Sometimes little is found. When we buy a few gallons of petrol for our cars, we pay not only the cost of the petrol, but also part of the cost of the search that is always going on.
很多时候,开采石油是靠运气的.有时候尽管石油离得很近也可能错过,但有时候我们很快就能开采到石油.当钻井钻入地下,土壤被带出地面.我们用不同层次的土壤样品来检测石油的痕迹.当它们消失在一个地方,钻井就要换个地方钻.许多钱就这样在勘探石油的过程中石沉大海.有时候可以勘探到少量的石油.当我们买了几加仑的汽油时,我们付的钱不仅仅是汽油的钱,还有那一直在进行中的勘探石油的钱.