名词
中文翻译：生存时间
同义词：
['lifespan', 'duration']
例句：
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1.The survival time of the virus is still unknown.
病毒的存活时间仍然未知。
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2.The study found that the survival time for the disease was reduced by 30%.
研究发现，该疾病的存活时间减少了30%。
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3.The research team has been working on developing a vaccine to increase the survival time of the virus.
研究团队一直在努力开发疫苗，以增加病毒的存活时间。