名词
中文翻译：低毒株
同义词：
['low-virulent strain', 'low-virulence strain']
例句：
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1. The newvaccine is designed to protect against low-virulent strains of the virus.
新疫苗旨在保护免受病毒的低毒株。
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2. Infections caused by low-virulent strains are less severe than those caused by high-virulent strains.
由低毒株引起的感染比由高毒株引起的感染轻。
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3.Researchers have isolated a low-virulent strain of the virus that can be used as a model for studying its behavior.
研究人员已经分离出一种低毒株的病毒，可以作为研究其行为的模式。