a pungent toxic gas that is a major air pollutant and is used in making sulphuric acid, in bleaching, and as a food preservative: formula SO2
| 单词 | sulphur dioxide |
| 释义 | sulphur dioxidenouna pungent toxic gas that is a major air pollutant and is used in making sulphuric acid, in bleaching, and as a food preservative: formula SO2 |
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