pedal valve

例句：

1. 1. The new car has a pedal valve that allows you to control the air conditioning.
   这款新车有一个踏板阀，可以让你控制空调。
2. 2.The engineer found a pedal valve that could be used to regulate the flow of oil.
   工程师发现了一个踏板阀，可以用来调节油的流动。
3. 3. The pedal valve was designed to prevent water from entering the engine during operation.
   踏板阀被设计成在操作时防止水进入发动机。