堤坝

例句：

1. 1. The ancient city was built on a natural dike.
   这个古老的城市建在天然堤坝上。
2. 2. The floodwaters rose to the top of the dike.
   洪水上涨到了堤坝顶部。
3. 3. The engineers were working on repairing the damaged dike.
   工程师们正在修理损坏的堤坝。