他说，由于他们缺少关于艾滋病的知识而且经常在不同地区流动，因此这群人较其他人群更容易感染艾滋病毒。
They are more vulnerable than other groups to the deadly disease, he said, for they are less aware of HIV/AIDS, and move frequently from place to place.
他说，由于他们缺少关于艾滋病的知识而且经常在不同地区流动，因此这群人较其他人群更容易感染艾滋病毒。
They are more vulnerable than other groups to the deadly disease, he said, for they are less aware of HIV/AIDS, and move frequently from place to place.
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