游离物

例句：

1. 1. The chemical analysis showed that the free substance in the sample contained trace amounts of mercury.
   化学分析显示样本中的游离物质含有微量的汞。
2. 2. The study found that the free components in the soil were beneficial for plant growth.
   研究发现土壤中的游离成分对植物生长有益。
3. 3. The researcher isolated a new free component from the plant extract.
   研究员从植物提取物中分离出一种新的游离成分。