1. Surviving cancer is a new trend. HIV/AIDS, however, is spreading quickly all over the world.
    癌症病人的生存率得到提高是一个新趋势。然而，艾滋病却正在全世界迅速蔓延。

2. Pushing off the diving board with my legs, I lifted my arms and shoulders back, and knew immediately I would be close to the board and might hit my hands. I tried to correct myself as I turned, spreading my hands wide apart.
    我用脚蹬跳板，臂膀向后举起，但马上意识到身体下落时可能会靠近跳板，碰伤手。转动身体时，我努力纠正动作，尽量把胳膊张开。

3. Preventing one case of AIDS means preventing many future cases, while preventing a case of measles(麻疹) or malaria(疟疾) in Africa would have little effect on its spreading, since those diseases are already common in many countries.
    预防一例艾滋病意味着为以后减少许多例艾滋病。而在非洲，预防一例麻疹或疟疾病对于防止疾病的蔓延起不了多大作用，因为这些疾病在许多国家已经是常见病。

4. I was fourteen more getting the branches and the vast spreading head of it cut off.
    把它的树枝和巨伞状的树冠砍下来用去十四天。

5. In sub-Saharan Africa and Latin America, particularly the Caribbean, most cases occur among heterosexuals, and spreading from mother-to-child is common.
    在靠近撒哈拉沙漠的非洲地区、拉丁美洲，尤其是在加勒比海地区，大多数病例都发生在异性恋者之间，而且往往是母子之间传播。