| 例句 |
contaminationnoun something that is or that makes impureswimming in the lake is banned until the contamination is identified and neutralized adulterant, contaminant, defilement, impurity, pollutant blot, blotch, spot, stain, taintdirt, filth, grime, muck, scum, sludge, smut, soilblemish, defect, disfigurement, fault, flawabnormality, imperfection, irregularity clarifier, filter, purifier, refinercleanliness, immaculateness, purity in the 15th century |