battery holddown cover

例句：

1. 1.The battery holddown cover on the remote control is easy to remove.
   遥控器上的电池固定盖很容易拆卸。
2. 2. The new car has a special feature that automatically locks the battery holddown cover when the engine is turned off.
   这款新车有一个特殊功能，当发动机关闭时，会自动锁定电池固定盖。
3. 3. The engineer carefully checked the battery holddown cover before starting the engine.
   工程师在启动发动机之前仔细检查了电池固定盖。