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| sewage systems | |||
| sewage system | |||
| sewerage system System of pipes, usually underground, for carrying waste water and human waste away from houses and other buildings, to a place where they can be safely get rid of (通常在地下的水管系统，用来把废水和人类产生的废料从房子和其它建筑物中输送到能安全处理它们的地方。) | |||
| sewerage | |||
| plumbing system; sewage stream; sewerage system | |||
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| sewage system; sewerage system | |||
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| saprobic system (systema saprobica) | |||
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| foulwater system | |||
| 污水 系统: 154 phrases in 16 subjects |