1. Spreading of AIDS in North America, Western Europe, Australia, New Zealand and parts of Latin America occurs most often among homosexual(同性恋) or bisexual(双性恋) men and intravenous (IV) (静脉内注射的) drug users(吸毒者), most often in city areas.
    在北美洲、西欧、澳大利亚、新西兰和部分拉丁美洲地区，艾滋病常常在同性恋或双性恋男子之间，或采用静脉内注射的吸毒者之间传播，并且往往在城市传播。