valve是什么意思(bumper和valve有什么区别)

bumper是保险杠的意思，而valve则是阀门的意思，区别可以从以下例子看出

The bumper is the protection in the front of your car, you can see it, and valve is inside the engine, control the air in and out, you can&#养老;t see it. 保险杠是汽车前部的保护装置，您可以看到它，而阀门在发动机内部，控制着空气的进出，您看不到它。