We could send a lander to drop a drilling probe through the kilometers-thick ice or attempt to find a huge fissure to access the sub-surface ocean.

我们可以发射一个着陆器，向该星球投放一个有钻头的探测器，钻通其几公里厚的冰面；或者尝试去寻找一个巨大的裂缝进入地下海洋。

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From this perspective, the technical obstacles of sub-salt drilling look like an opportunity.

从这个角度看，盐下钻探的技术障碍看来是个契机。

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Our company is main products are series of drilling screws, and mean-while we also have sub production line for Drywall screw, Chipboard screw, and Tapping etc.

我公司主导产品为钻尾螺丝系列(六角华司头、盘头、钮扣头、喇叭头、六角法兰头、小仔头等)，同时也生产干壁钉、纤维板钉和自攻钉等自攻类螺丝。

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Faulty blowout preventers, errors in the management of drilling fluids, a sub-par cementing job, questionable well design, haste it was a confluence of these factors that led to the blowout.

FORBES: Offshore Oil Czar Bromwich Falls Flat With Op-Ed Defending Permit Delays

Chevron began drilling this ultradeep well over a year ago, with the objective of boring down to big sub-salt prospects 29, 000 feet beneath the surface.

FORBES: Chevron Makes Big Discovery In Louisiana - And It's Not Even Done Drilling Yet