soil samples

例句：

1. 1.We need to collect soil samples from different locations for testing.
   我们需要从不同地点收集土壤样本进行测试。
2. 2.The researcher collected soil samples from the site for further analysis.
   研究人员从现场收集了土壤样本以供进一步分析。
3. 3.The government is required to provide soil samples for environmental monitoring.
   政府被要求提供土壤样本进行环境监测。