Design of the multi - purposes Silt Cleaning Equipment of Spraying, Dragging and Digging for the Silt cleaning and the Shore Protection in the Tidy River Outlet Down the Sluice是什么意思_Design of the multi - purposes Silt Cleaning Equipment of Spraying, Dragging and Digging for the Silt cleaning and the Shore Protection in the Tidy River Outlet Down the Sluice在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句