They were drilling through solid rock.
他们正在把实心岩钻通。
If the initial workpiece is solid, a drilling operation must be performed first.
如果初始工件是实心的，则必须首先进行钻孔作业。
Drilling in the middle of the solid lid is forbidden and invalid.
在实心盖子当中钻孔是禁止的和无效的。
This new model of drilling machine can bore through solid rock ten metres deep.
这台新型钻机能钻透十米厚的坚固岩石。
This new model of drilling machine can bore through solid rock ten metres deep.
这台新型钻机能钻透十米厚的坚固岩石。
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