unsulfonated residue

例句：

1. 1. The chemical analysis showed that the unsulfided residue was a significant contributor to the contamination.
   化学分析显示，未磺化残留物是污染的一个主要来源。
2. 2. The study focused on the unsulfided residue in the soil and its impact on plant growth.
   该研究专注于土壤中的未磺化残留物及其对植物生长的影响。
3. 3. The researcher analyzed the unsulfided residue in the wastewater for any potential environmental hazards.
   研究者分析了废水中的未磺化残留物，以寻找任何潜在的环境危害。