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  1. Oxford Dictionary

    outfall pipe

    • n.
      a pipe through which a drain or sewer empties into the sea, a river, or a lake

    • noun: outfall pipe, plural noun: outfall pipes

    • 釋義

    名詞

    • 1. a pipe through which a drain or sewer empties into the sea, a river, or a lake a large sewage outfall pipe is to be extended