valve swelling

例句：

1. 1. The valve is swollen, which may cause the system tofail.
   阀门膨胀了，这可能导致系统失败。
2. 2.The valve was damaged during the installation process.
   阀门在安装过程中受损。
3. 3. The valveneeds to be replaced assoon as possible to prevent furtherdamage.
   阀门需要尽快更换，以防止进一步损坏。