名词
中文翻译：电池节省器
同义词：
['battery extender', 'battery booster']
例句：
-
1.The new car has a built-in battery saver that automatically shuts off the engine when it's not in use.
这款新车内置了电池节省器，当车辆不使用时会自动关闭引擎。
-
2.To save energy, we should turn off the lights when leaving a room.
为了节约能源，离开房间时应该关灯。
-
3. The battery saver helps to prolong the life of the battery by preventing overcharging.
电池节省器通过防止过充来延长电池的使用寿命。