raised surface structure

例句：

1. 1. The engineer designed a raised surface structure to improve drainage.
   工程师设计了一个凸起的表面结构来改善排水。
2. 2.The raised surface structure helps to prevent water from seeping into the ground.
   凸起的表面结构有助于防止水分渗入地面。
3. 3. The raised surface structure was made of reinforced concrete and could withstand heavy loads.
   凸起的表面结构由钢筋混凝土制成，能够承受重载。