由相互连接的下水道管道构成的网络；下水道系统。
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由相互连接的下水道管道构成的网络；下水道系统。；由相互连接的下水道管道构成的网络；下水道系统。
A network or system of sewer pipes that carries wastewater.
The city is investing in the repair of its aging sewer network.
该市正在投资修复其老化的下水道管网。
由相互连接的下水道管道构成的网络；下水道系统。
A network or system of sewer pipes that carries wastewater.
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Dictionary facts from AI_SUPPLEMENT.