1. Heterosexual(异性之间的) spreading is low, but there is danger that the spread of AIDS from male(男性) IV-drug users to their female(女性) partners could increase the appearance of AIDS in the heterosexual population.
    异性之间传播可能性不大，但艾滋病从男性静脉注射吸毒者传播到他们的女性伴侣，则有可能提高异性恋者艾滋病的发病率。

2. Human population growth is creating food shortages, problems of air quality, and changes in weather patterns.
    人口的增长带来了粮食短缺、空气质量降低、天气状况变化等问题。

3. Disease has decimated the population.
    疾病使大部分人死亡.

4. As the number of people on Earth increases, it becomes increasingly difficult for the population to survive on the resources of the land.
    随着地球上人口的增加，人类依靠土地资源生存变得越来越困难。

5. As the human population grows, people consume more.
    随着人口越来越多，人类的消耗也越来越多。

6. A genetic trail visible on the maps shows that the breeding ground for this mixed population probably lies in Ethiopia or the Middle East.
    图谱上显示的遗传轨迹表明这一混血人种的发生地可能就在埃塞俄比亚或中东地区。

7. All Europeans are thought to be a mixed population, with 65% Asian and 35% African genes.
    "人们认为所有的欧洲人都是混合人种，有65%的亚洲人基因，35%的非洲人基因。

8. Since the factory moved,this town has only a remnant of its former population.
    自从那家工厂移走后，这个小镇只剩下一些原先居民。

9. She always referred to them as ´the shifting population´,
    她称这些佣人叫"流动人口"，

10. Pessimists believe further population growth will eventually cause a virtual collapse of public services in many cities.
    悲观主义者认为，人口的进一步增长最终将使许多城市的公共设施崩溃，