ground water tracer test

例句：

1. 1. The groundwatertracer test is a crucial step in the investigation of contaminated areas.
   地下水示踪试验是调查受污染地区的关键步骤。
2. 2. The groundwater tracer test was conducted to determine the source of the pollution.
   进行地下水示踪试验是为了确定污染源。
3. 3.The groundwater tracer test revealed that the contamination originated from a nearby industrial plant.
   地下水示踪试验显示，污染来自附近的一家工业工厂。