borehole columnar section

例句：

1. 1.The engineer drilled a borehole in the rock to test its strength.
   工程师在岩石中钻了一个钻孔来测试其强度。
2. 2.The geologist used a borehole to collect samples for analysis.
   地质学家使用一个钻孔来收集样本进行分析。
3. 3. The construction crew had to boreholes in the ground to lay the foundation.
   施工队伍不得不在地面上打孔来铺设地基。