加里·纳贝尔：艾滋病毒的变体多达千百万种，它的复制速度极快，并且可以在复制过程中改变遗传结构。
Gary Nabel : There are millions and millions of strains of the AIDS virus. The AIDS virus is remarkable for their repeatity, with which it can change its genetic structure.
加里·纳贝尔：艾滋病毒的变体多达千百万种，它的复制速度极快，并且可以在复制过程中改变遗传结构。
Gary Nabel : There are millions and millions of strains of the AIDS virus. The AIDS virus is remarkable for their repeatity, with which it can change its genetic structure.
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