名词
中文翻译：动力单元
同义词：
['powersource', 'power supply']
例句：
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1. The power unit is responsible for providingelectricity to the entire building.
这个动力单元负责向整个建筑提供电力。
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2. The powerunit is designed to be compact and efficient.
这个动力单元设计得紧凑且高效。
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3.The power unit was installed in the newbuilding last week.
这个动力单元上周安装在新建筑中。