pit sampling

例句：

1. 1. Pit sampling is a method used to collect samples from the ground for analysis.
   坑探采样是一种用于从地面收集样本进行分析的方法。
2. 2.The company uses pit sampling to monitor soil quality and prevent pollution.
   该公司使用坑探采样来监测土壤质量并防止污染。
3. 3. During the construction of the new highway, pit sampling was conducted to ensure the safety of the workers.
   在新建高速公路的建设过程中，进行了坑探采样以确保工人的安全。