名词
中文翻译：要求保留
同义词：
['require', 'demand', 'insist on']
例句：
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1. The company demanded a raise forthe employees.
公司要求提高员工的工资。
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2. She demandedthat he come to her aid immediately.
她要求他立即来帮助她。
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3. The government demandedthat all citizens be vaccinated against the virus.
政府要求所有公民接种疫苗以预防病毒。