The answer: wells that drill vertically down to the shale bed, then make a gradual 90-degree horizontal turn through the shale deposit.
目前，科学家提出了解决方案——先垂直钻探至页岩床位置，然后以90度水平地钻探页岩沉积层。
If it turns out that there's cash in broadband brain provision, I suspect the answer will be: how long is the bit on a drill?
如果到头来提供“大脑宽带”有报酬的话，我怀疑那个问题的答案是：钻头(谐音赚头)是多少尺寸呢？
If it turns out that there's cash in broadband brain provision, I suspect the answer will be: how long is the bit on a drill?
如果到头来提供“大脑宽带”有报酬的话，我怀疑那个问题的答案是：钻头(谐音赚头)是多少尺寸呢？
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