由于致病的因素相当常见，再加上基因上免疫缺陷和年龄这类因素的复杂性，确定患上无论是癌症还是代谢综合病症的实际风险就非常困难。
With hazards everywhere, plus the complications of genetic predisposition and age, it is hard for comeone to work out his actual risk of developing either cancer or metabolic syndrome.
获得性免疫缺陷综合征(艾滋病)系指艾滋病毒感染最晚期，感染者可在受感染10至15年后发病。
The most advanced stage of HIV infection is Acquired Immunodeficiency Syndrome (AIDS), which can take 10-15 years to develop.
30年前，当五个在洛杉矶的年轻男同性恋者被一种疾病击垮时，一场逼近的世界性灾难渐露迹象，而这种疾病正是闻名的艾滋病（获得性免疫缺陷综合征）。
Thirty years ago, the world got its first inkling of impending catastrophe when five young gay men in Los Angeles were struck down by the illness that became known as HIV/AIDS.
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