Open sewers flow down the streets.

排水沟在户外，污水沿着街道流动。

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What is it with Mel and sewers?

什麽是它与梅尔和下水道？

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Some are threatening to dump milk into sewers.

一些人扬言要将牛奶倒进下水道。

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Once a year they have to flush the city's sewers.

每年，他们都得冲洗一次城市下水道。

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Once a year they have to flush the city's sewers.

每年，他们都得冲洗一次城市下水道。

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