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1. Oxford Dictionary

   cofferdam

   • IPA[ˈkɒfədam]

   英式

   • n.
     a watertight enclosure pumped dry to permit construction work below the waterline, as when building bridges or repairing a ship.

   • noun: cofferdam, plural noun: cofferdams

2. • 更多解釋

   cofferdam

   • IPA[ˈkôfərˌdam]

   美式

   • n.
     a watertight enclosure pumped dry to permit construction work below the waterline, as when ...

   Oxford American Dictionary