1. The construction workers built a cofferdam to keep the water out of the work area.
建筑工人建造了一个围堰，以阻止水进入工作区。

2. The cofferdam was carefully designed to withstand the pressure of the surrounding water.
这个围堰经过精心设计，能够承受周围水的压力。

3. The engineers used sheet piles to create a cofferdam around the construction site.
工程师们使用了钢板桩来围堰建筑工地。

4. The cofferdam allowed the workers to excavate the foundation of the building without interference from the water.
围堰让工人们可以在不受水的干扰下挖掘建筑物的基础。

5. The cofferdam was removed once the foundation was complete and the building was ready to be constructed.
一旦基础完工，建筑物准备建设，围堰就被拆除了。

6. The cofferdam proved to be an effective solution for managing the water levels during the construction project.
围堰被证明是管理建设项目水位的有效解决方案。