It's no foolproof vaccine, but the researchers who conducted the 2.5-year trial contend it's the first-ever hope of thwarting the spread of HIV and AIDS.
这并不是一种万无一失的疫苗，但经过两年半试验，研究人员认为它为抗击艾滋病病毒和防止艾滋病蔓延带来第一缕曙光。
It's no foolproof vaccine, but the researchers who conducted the 2.5-year trial contend it's the first-ever hope of thwarting the spread of HIV and AIDS.
这并不是一种万无一失的疫苗，但经过两年半试验，研究人员认为它为抗击艾滋病病毒和防止艾滋病蔓延带来第一缕曙光。
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