1·The human population swelled, at least temporarily, as migrants moved south.
随着移民们南移，人口便增加了，至少是暂时增加了。
—— 《柯林斯英汉双解大词典》
2·Our forefathers had no idea that human population would increase faster than the supplies of raw materials.
我们的祖先没有想到人口的增长速度会超过原材料的供应速度。
3·Their use in medicine has only increased as the human population and subsequent demand has grown significantly.
它们在医学上的用途只随着人口和后续需求的显著增长而增加。
4·I want to tell you about the past, present and future of the human population. So let's start with a few problems.
我想告诉你们有关人口数量的过去、现在和未来。那么让我们从一些问题入手。
5·Within that same time frame, we evolved into an urban species, in which 60% of the human population now lives vertically in cities.
在同一时期，人类逐渐开始适应城市生活，目前有60%的人口分布在城市的纵深之中。
6·Applying the most conservative estimates to current demographic trends, the human population will increase by about three billion people by then.
按照对目前人口趋势的最保守估计，到那时人口将增加约30亿人。
7·The idea is that around the year 1800 CE the human population became large enough, around a billion people, that its activities started altering the environment.
这种想法出现于公元1800年左右，当时人口变得足够多，大约有10亿人，人类的活动开始能够改变环境。
8·It's not only the study of human population, but the populations of non-human species, including viruses.
这不仅是对人类种群的研究，也是对非人类种群（包括病毒）的研究。
9·I want to tell you about the past, present and future of the human population, so let's start with a few problems.
我想告诉你们关于人类的过去、现在和未来的事情，所以让我们从一些问题入手。
10·The human population contains a great variety of genetic variation, but drugs are tested on just a few thousand people.
人类群体中有各种各样的基因变异，但是药物只在几千人身上进行测试。