Any new prevention modality must not undermine existing protective behaviours and prevention strategies that reduce the risk of HIV transmission.

任何新的预防方法必须不损害减少HIV传播风险的现有保护行为和预防战略。

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A second major protective function of the skin is the prevention of invasive bacterial infection.

皮肤的第二个主要保护功能是防止侵袭性细菌感染。

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Simultaneously, in accordance with the disaster mechanism, the maintenance and disaster prevention countermeasures are presented for brick-wood structure type protective buildings.

同时，针对砖木结构类保护性建筑的灾害机理，提出了这类保护性建筑的维护与防治对策。

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