soil core

例句：

1. 1. The scientist collected a soil core to study the effects of pollution on plant growth.
   科学家采集了一个土壤样本来研究污染对植物生长的影响。
2. 2. The company used soil cores to test the quality of its products before they were sold.
   该公司使用土壤样本测试产品的质量，以确保它们在出售前是合格的。
3. 3. The researcher analyzed the data from the soil cores to determine the cause of the landslide.
   研究员分析了土壤样本的数据，以确定滑坡的原因。