levee base

例句：

1. 1. The engineers were working on the construction of a new levee base to protect the city from floods.
   工程师们正在建设一个新的堤坝基础，以保护城市免受洪水侵袭。
2. 2.The construction of the levee base was a major project for the city.
   建造堤坝基础是该市的一项主要工程。
3. 3.The levee base was designed to withstand high water levels and provide a safe passage for people and vehicles during flood events.
   堤坝基础的设计旨在承受高水位并确保在洪水事件期间为人们和车辆提供安全通行。