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One theory is that the infection has been present in humans for a very long time.
有一种理论认为,这种传染病存在于人类中已经有很长时间了。
《柯林斯高阶英汉双解学习词典》
They can enhance otherwise mild infections and may reactivate latent viruses.
它们能增强轻微传染,还能活化潜伏病毒.
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Luckily, there were no secondary infections and both of the patients survived.
幸运的是, 这两起传染病均未发生继续传染,而且两个病者都幸存下来了.
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OBJECTIVE To discuss cause and nursing of hospital infection in infectious disease ward.
目的探讨传染病房医院感染的原因和护理对策.
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