名词
中文翻译：花费的电荷
同义词：
['expended charge', 'spent electricity', 'spent power']
例句：
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1. The company spent a significant amount of money on research and development.
该公司在研究和开发上投入了大量资金。
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2.The lost charge in the battery was due to a faulty connection.
电池中丢失的电荷是由于连接故障造成的。
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3. The spent charge was used to recharge the battery.
使用已耗尽的电荷来给电池充电。