并且，石油工业已经开发出可用于海底管道挖槽的遥控船，可以经过改造用来切割矿石，即使这些矿石在1.5千米以下也没问题。
The oil industry has also developed remotely-operated vehicles to make trenches for seabed pipelines, which can be adapted for cutting ore, even though it may lie much deeper, at, say, 1.5km down.
为了检验这一理论，来自英国埃克塞特（Exeter）大学的研究人员建造了一个模型，先在木板上挖槽，然后将木球放入槽内。
To test the theory, researchers from the University of Exeter constructed a model in which wooden balls were inserted into grooves dug out of timber planks.
太平洋岸边的野人绕着一个树根挖槽，想用这棵树建造一艘独木舟。
The savage on the shores of the Pacific cuts a groove in the bark round the root of the tree of which he intends to form his canoe.
应用推荐