我们这家石油勘探公司开支巨大，原来一直在放弃勘探的边缘徘徊，直到上周我们的一口钻井打出了石油。

EXAMPLE: Our petroleum exploration company's expenses were huge, and we were tottering on the brink of abandoning our efforts until last week when one of our drills discovered oil.

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钻井成本比预期的下降速度慢一些，上个月先锋公司公布了2016年产量增加目标，但是并没有增加开支。

The cost declines are expected to slow, but Pioneer last month lifted its 2016 target for production growth without any spending increase.

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