arched concrete dam

例句：

1. 1. The arched concrete dam is a marvel of modern engineering.
   拱形混凝土大坝是现代工程的奇迹。
2. 2. The arched concrete dam has been a source of pride for the local community.
   拱形混凝土大坝一直是当地社区的骄傲。
3. 3. The arched concrete dam is designed to hold back floodwaters during heavy rainfall.
   拱形混凝土大坝设计用来在大雨期间阻挡洪水。