breathing valve

例句：

1. 1.The engineer installed a breathing valve in the pipeline to prevent air leaks.
   工程师在管道中安装了呼吸阀，以防止空气泄漏。
2. 2. The hospital needed to install a breathing valve in the ventilation system to improve patient care.
   医院需要安装呼吸阀来改善病人护理。
3. 3. The firefighters used a breathing valve to control the flow of gases during the rescue operation.
   消防员使用呼吸阀来控制救援过程中的气体流动。