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他们不知道如何预防或控制艾滋病。
They do not know how to prevent or control it. It is very dangerous.
youdao
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艾滋病病毒预防措施如何才能变得更有效？
How can HIV prevention efforts be made more effective?
youdao
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艾滋病病毒预防措施如何才能变得更有效？
How can HIV prevention efforts be made more effective?
youdao