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Reinforced concrete pipe could be regarded as flexible pipe.
钢筋混凝土管道可看作柔性管道。
youdao
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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！
youdao
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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！
youdao