例文
- もっと例文: 1 2 3 4 5 6 7 8 9 10
- Tailings disposal sites represent potential sources of contamination for thousands of years.
- Quality-control executives at Chiron considered just the obvious sources of contamination, Goodman said.
- The nanoparticles are then transported by groundwater flow to the source of contamination.
- It pointed to me that we had found a direct source of contamination,
- According to the EPA, the probable source of contamination is unknown.