名词
中文翻译：疫苗
同义词：
['antigen', 'vaccine', 'inoculation']
例句：
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1.The new vaccine has been shown to be highly effective against the virus.
新疫苗已被证明对这种病毒非常有效。
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2. Vaccination is a crucial step in preventing the spread of infectious diseases.
疫苗接种是预防传染病传播的关键步骤。
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3.The government has announced plans to roll out a new vaccine to protect its citizens.
政府宣布计划推出一种新的疫苗，以保护其公民。