Rice is the staple food of more than half the world's population.
大米是世界上半数以上人口的主食。
China covers large areas and has a great population.
中国幅员辽阔，人口众多。
The population of India has been steadily increasing for decades.
印度的人口几十年来一直在稳步增长。
Each population, each community, even each generation of chimps is unique.
每个种群，每个群落，甚至每一代黑猩猩都是独一无二的。
What can be done to ensure enough food for the world's population to live on?
为了确保全世界的人口都有足够的食物维持生活，我们能做些什么？
Thanks to slowing population growth, land currently ploughed up for crops might be able to revert to forest or wilderness.
由于人口增长放缓，目前用于种植作物的耕地可能会恢复成森林或荒野。
Vertical farming is an attempt to address the undoubted problems that we face in producing enough food for a growing population.
垂直农业试图解决我们在为不断增长的人口生产足够的粮食时所面临的不容置疑的问题。
In America, a one-percentage point increase in the proportion of immigrants in the population made the native-born 0.05% better off.
在美国，移民在人口中所占比例每增加一个百分点，本土出生的人口生活水平就会提高0.05%。
About 75% of the world's population will live in cities by 2050, so cities will need to be more modern to deal with the coming problems.
到2050年，全球约75%的人口将居住在城市，因此城市需要更加现代化才能应对未来的问题。
Organic agriculture is a relatively untapped resource for feeding the Earth's population, especially in the face of climate change and other global challenges.
有机农业是一种相对而言尚未开发的资源，可以用来养活地球上的人口，尤其是在应对气候变化和其他全球性挑战的情况下。
Experts say drip irrigation is an innovation whose importance is growing, as climate change and rising population strain water supplies in many parts of the world.
专家表示，随着气候变化和人口增长对世界上许多地区的水资源供应造成压力，滴灌这种创新做法显得越来越重要。
Against a backdrop of drastic changes in economy and population structure, younger Americans are drawing a new 21st-century road map to success, a latest poll has found.
一项最新民调发现，在经济和人口结构发生巨变的背景下，美国的年轻一代正在绘制一幅21世纪通向成功的地图。
The picture of Teotihuacán that emerges is a classic picture of positive feedback among obsidian mining and working, trade, population growth, irrigation, and religious tourism.
展现的特奥蒂瓦坎图景是黑曜石的开采和加工、贸易、人口增长、灌溉和宗教旅游之间良性反馈的经典画面。
Older people must be given more chances to learn if they are to contribute to society rather than be a financial burden, according to a new study on population published recently.
根据最近发表的一项关于人口的研究，如果老年人要对社会作出贡献而不是成为经济负担，就必须给他们更多学习机会。
Luckily, the CoT starfish population gradually declined on its own and the reefs recovered.
幸运的是，刺冠海星的数量渐渐地自发减少了，珊瑚礁也恢复了。
On 8 June 2004, more than half the population of the world were treated to a rare astronomical event.
2004年6月8日，世界上一半以上的人有幸目睹了罕见的天文现象。
The grizzly population in the Yellowstone region has climbed to an estimated 600, 100 more than the recovery goal.
黄石地区的灰熊数量已经上升到约600头，比恢复计划的目标多出100头。
Once the exclusive province of the wealthy, travel and tourism have become an institutionalised way of life for most of the population.
旅游曾经是富人的专属领域，如今已成为大多数人约定俗成的生活方式。
The chipmunk population increased strikingly due to two successive years of abundant acorn crops in the forest.
金花鼠数量显著地增加，是因为森林里连续两年丰硕的橡子收成。
China has a vast territory and a large population.
中国地域辽阔，人口众多。
The population of China is the largest in the world.
中国是世界上人口最多的国家。
We need more food to feed the world's growing population.
我们需要更多的食物来养活世界上不断增长的人口。
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