短語詞組短語frame sunk -well 框架沉井sunk -well method 沉井法construction of sunk well 沉井施工rounded sunk well 圓形沉井sunk well found 沉井根蒂sunk well without bailing 不排水沉井sunk well foundation [建]沉井基礎sunk well and cofferdam 沉井圍堰concrete sunk well 混凝土沉井 返回 sink well