名词
中文翻译：辅助
同义词：
['auxiliary', 'accessory', 'appendage']
例句：
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1. The car has an auxiliary power supply for emergencies.
这辆车有一个备用电源，用于紧急情况。
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2. She carried an auxiliary flashlight in her bag.
她包里带了一只备用手电筒。
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3. The laptop has a built-in auxiliary microphone for better sound quality.
这款笔记本电脑内置了一个更好的音质的外接麦克风。