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。

youdao

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。

youdao

We sometime have not much faith in drilling deployments in the area whereexploration is low due to lack of sub-surface geological information.

在低勘探程度区，往往由于缺乏地下地质资料，对钻井的部署缺乏信心。

youdao

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