-
1.The engineer must ensure that the retaining valve is released before starting the pump.
工程师必须确保在启动泵之前释放止回阀。
-
2.The construction crew carefully monitored the process to ensure the retaining valve was released correctly.
施工团队仔细监控了这个过程，以确保止回阀正确地被释放。
-
3.After the valve was released, the team quickly began the process of cleaning and repairing the damaged pipe.
阀门释放后，团队迅速开始了清理和修复损坏管道的过程。