throttle lever latch spring

例句：

1. 1. Thecar's throttle lever is easyto use and adjusts the engine speedsmoothly.
   汽车的油门杆易于使用，可以平滑地调整发动机速度。
2. 2. Thelatch spring on the door keepsit securely closed.
   门上的锁扣弹簧保持门紧闭。
3. 3. The engineer replaced the throttle lever with a new one to improveperformance.
   工程师用一个新的油门杆来提高性能。