seismic sounding

例句：

1. 1. The company conducted a seismic sounding to map the underground oil reserves.
   该公司进行了一次地震勘探，以绘制地下石油储备图。
2. 2. The seismic sounding revealed a significant fault line running through the region.
   地震勘探揭示了一条穿过该地区的重要断层线。
3. 3.The seismic sounding helped scientists to understand the geological structure of the area.
   地震勘探帮助科学家了解了该地区的地质结构。