名词
中文翻译：疫苗
同义词：
['antigen', 'vaccines']
例句：
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1.The new vaccine is highly effective against the virus.
这种新疫苗对这种病毒非常有效。
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2.Vaccines are used to protect people from diseases.
疫苗用于保护人们免受疾病侵害。
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3.The government has announced a new vaccine rollout for the pandemic.
政府宣布了新的疫苗推广计划，以应对疫情。