The biggest challenge with treating HIV today is that the virus becomes dormant and often develops resistance to HIV drugs.

在今天，对付HIV最大的挑战就是它潜伏期很长，并且对治疗HIV的药物产生抗药性。

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The guidelines are intended to balance the treatment benefits with the side effects from the drugs and the possibility of fostering drug resistance in the virus.

治疗准则旨在对治疗效果和药物副作用以及可能产生的病毒耐药性进行平衡。

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By revealing areas of low bone density, they allow doctors to intervene with resistance training, nutrients and drugs, in the hope of preventing fractures, which can be devastating to older people.

通过显示低密度区，允许医生采取抗阻力训练，营养和药物干预，以预防骨折，这对老人是毁灭性的。

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