| 单词 | sewer gas |
| 释义 | Word Frequency sewer gas(ˈsuːə ɡæs) noun a mixture of toxic and non-toxic gases (mainly methane) produced and collected in sewers by the decomposition of waste matter such as faeces or dirty water from homes and factories Staff reported the smell to a manager, who said it was sewer gas. This prevents sewer gas from backing up into the home. |
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