valveman

例句：

1. 1. The valveman was responsible for ensuring the safety of the pipeline system.
   阀门工负责确保管道系统的安全。
2. 2.The valveman had to perform a complex procedure to fix the leak in the pipe.
   阀门工必须执行一个复杂的程序来修复管道的泄漏。
3. 3. The valveman was called in to replace the damaged valve in the factory's main pumping station.
   阀门工被召来更换工厂主泵站损坏的阀门。