他表示，艾滋病毒，即人体免疫缺陷病毒非常难以防控，因为它的突变速度快得惊人。
He said the AIDS virus, also known as HIV, has been so difficult to stop because it mutates at a dizzying rate.
研究人员在9月28日发表的PLOS生物学上的一篇文章中称，对于病毒起源的估计可能会将嗜肝病毒的突变速度减慢1000倍。
The new estimate would slow the average rate of hepadnavirus mutation some 1,000-fold, wrote the researchers of the new the study, published online September 28 in PLoS Biology.
研究人员在9月28日发表的PLOS生物学上的一篇文章中称，对于病毒起源的估计可能会将嗜肝病毒的突变速度减慢1000倍。
The new estimate would slow the average rate of hepadnavirus mutation some 1, 000-fold, wrote the researchers of the new the study, published online September 28 in PLoS Biology.
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