用一些特殊的专孔方法从洞里挖掘岩石来提取样品。
Cores- samples of extracted rock from the holes using some special method of drilling.
科学家们曾为这些精心打磨、常现淡红色的砾岩石刃石斧所迷惑，这些器具是从南非海滨的史前遗址挖掘出来的。
Scientists had been puzzled by the fine-grained and often reddish coloured silicate blades and axes excavated from prehistoric sites at Pinnacle Point on the South African coast.
这个阶梯状的船闸延绵5公里（3英里），深度达9米（30英尺），整体都在在岩石上挖掘出来的，后来这里形成了一个小城镇——船闸渡口镇（Lockport）。
The staircaselike locks were followed by a 5-km- (3-mile-) long, 9-metre- (30-foot-) deep cut blasted into the rocky plateau. The town that grew at this site was appropriately named Lockport.
诸如蝎子和蛇之类的典型沙漠生物、青蛙等住在水里的动物、在岩石和圆木下挖掘隧道的水獭也在参展之列。
Typical desert creatures such as scorpions and snakes are also on display, as well as animals that live in water like frogs, and otters that burrow under rocks and logs.
地面随处可见的石头，并带来水池挖掘到都是岩石的效果。
Stone is everywhere on the ground and gives the effect that the basins were entirely excavated into rock.
这种软质岩石最适合挖掘洞穴。
数天，挖掘时间取决于土壤和岩石条件。
挖掘机商标名一种挖掘机的商标名字，前面有一大斗用来移动和搬起土块、岩石和碎石。
A trademark used for an excavating machine with a large scoop in front for moving and lifting earth, rocks, and rubble.
我认为挖掘一词用得合适，溺为许多化石都是埋减在岩石之中的，它们必须由地质学家或古生物学家去挖掘。
I think this is a fitting name because many fossils are found buried in the rocks and must be uncovered by the geologists or paleontologists.
我认为挖掘一词用得合适，溺为许多化石都是埋减在岩石之中的，它们必须由地质学家或古生物学家去挖掘。
I think this is a fitting name because many fossils are found buried in the rocks and must be uncovered by the geologists or paleontologists.
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