isoreagent

例句：

1. 1. The scientists used the isoreagent to analyze the samples.
   科学家们使用同位素试剂来分析样品。
2. 2.The isoreagent was used to detect the presence of heavy metals in the soil.
   同位素试剂被用来检测土壤中重金属的存在。
3. 3. The isoreagent helped the researchers to identify the origin of the samples.
   同位素试剂帮助研究人员确定了样本的来源。