堤坝高于设计洪水的余高的英文

• free board

• 堤坝:    dyke-dam; dykes and dams; da ...
• 高于:    overtop; exceed; super-; sup ...
• 设计洪水:    design flood
• 的:    4次方是 The fourth power of 2 i ...
• 余:    Nine minus four is five.; Fo ...