second-stage cofferdam

例句：

1. 1. The construction of the second-stagecofferdam is crucial for flood control.
   建造第二阶段围堰对于防洪至关重要。
2. 2. The engineers carefully designed the second-stage cofferdam to withstand the high waterpressure.
   工程师们仔细设计了第二阶段围堰，以承受高水压。
3. 3. During theconstruction of the second-stage cofferdam, workers had to be careful notto damage the surrounding environment.
   在第二阶段围堰的建设过程中，工人们必须小心谨慎，以免破坏周围的环境。