Stay overnight in a concrete sewer pipe on the banks of the River Danube.

在多瑙河河畔的混凝土下水管里住一夜吧！

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This final operation is the"pullback"and installs the line pipe under the river.

这最后的操作叫“拖管”，它使管道就位于河床下面。

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This final operation is the"pullback"and installs the line pipe under the river.

这最后的操作叫“拖管”，它使管道就位于河床下面。

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