They stacked rocks with center holes (tube or doughnut shaped) from the surface to the deep stone layer as a guide for their drills (similar to today's guide tubes).

管状或中空管状的中心孔从地表到深石岩石层放满石头，以作为铁转的探头，作用类似今天的导管。

youdao

Mr Kuchi, who is famed for his deep knowledge of customary law, asked the feuders to "place a stone" on their dispute-to suspend hostilities while the jirga sat.

库奇以其对习惯法的深刻认识而出名，他请求双方将争执“用坚石压下”——在支尔格期间中止彼此恶意。

youdao

But a researcher [Julio Mercader], from the University of Calgary, decided to survey 70 stone tools found in one of the deep chambers of a long cave.

但来自卡尔加里大学的研究人员胡里奥·梅尔卡德不同意上诉结论，他决定通过检测在一处又深又长的远古洞穴中发现的70件石器一探究竟。

youdao

Researchers are assessing the riverbed in the deep Anchor Stone channel, down river from Dittisham.

BBC: Research into River Dart's tidal power potential

The palace, spotlit by the evening sun, is painted in earthy tones: deep pinks, stone greys, cinnamon browns.

BBC: The perfect trip: China

Deep underneath your feet is a hellish stone soup, kept hot by a torrent of radiation from poisonous isotopes of uranium, thorium and potassium in the earth's superheated mantle.

FORBES: Looking For Energy, Google Goes To Hell