Guard's van valve

例句：

1. 1. The guard's van valve isessential for maintaining the safety of the vehicle.
   警卫的卡车阀门对于保持车辆安全至关重要。
2. 2. The guard's van valve wasdesigned to prevent leaks and ensure smoothoperation of the vehicle.
   警卫的卡车阀门被设计来防止泄漏并确保车辆的顺畅运行。
3. 3. The guard's vanvalve is a critical component of the vehicle's engine system.
   警卫的卡车阀门是车辆发动机系统的一个关键组成部分。