drainage bunker

例句：

1. 1. The engineers designed the drainage bunker to prevent flooding during heavy rains.
   工程师们设计了排水井，以防大雨时发生洪水。
2. 2.The city has implemented a new drainage bunker to improve its water management system.
   该市实施了一个新的排水井系统，以改进其水管理。
3. 3. The construction of the drainage bunker was completed ahead of schedule, saving time and resources.
   排水井的施工提前完成，节省了时间和资源。