Agriculture provided a more dependable source of food, causing populations to increase; eventually excess population migrated to new lands.

农业提供了更加可依赖的粮食来源，使人口增长；最终过多的人口迁移到新的土地。

youdao

They use statistical models designed to calculate so-called excess mortality that occurs during the period when influenza viruses are circulating widely in a given population.

所使用的统计模型旨在计算流感病毒在特定人群中广泛传播期间发生的所谓超额死亡率。

youdao

Experience shows that all pandemics cause excess deaths, that severity can change over time, and that severity can vary according to location and population.

经验显示，所有的大流行均造成超额死亡，严重性可能会随着时间的推移而发生变化，另外，在不同的地点和不同的人群中严重性可能存在差异。

youdao

However, developing countries like India have a population in excess of 1 billion.

FORBES: Facebook Gets With MediaTek To Scrape Emerging Markets Barrel

Mr McGuinness said that as the fifth largest country in the world and with a population in excess of 191m people, Brazil was "a key market for us".

BBC: Peter Robinson and Martin McGuinness in Sao Paulo

Who knows, but these three banks have operations covering areas in excess of 95% of the population of America.

FORBES: Meet The New Subprime: It Will Cost Us Billions