经数月钻探，在沿海找到了石油。 After months of drilling, oil was found off the coast.
自那以后，我在自己熟悉的一行（在巴西钻探石油）里干了好多种工作，现在我已跟着一个石油公司来到了海湾地区。 Since then I've had a variety of jobs in my own line of country—deep drilling in Brazil, and I've been up the Gulf with an oil concern.
通过钻探发现很有开采价值的油层。 Valuable deposits of oil have been found by drilling.