动词短语
中文翻译：减少到真空状态
同义词：
['reduce to', 'reduce to the point of', 'reduce down to']
例句：
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1. The companyhas been reduced to a mere shell after years of decline.
这家公司在多年的衰落后，已经变得名存实亡。
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2.The team's morale was reduced to a mere whisper after their defeat.
团队在失败后士气低落，只能低声讨论。
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3.The government has been reduced to a mere puppet in the hands of the opposition.
政府在反对派的操控下，已沦为一个傀儡。