到2050年，将有近80%的地球人口生活在城市中心地区。
By the year 2050, nearly 80% of the Earth's population will live in urban centers.
它不会在地球上散播神经毒性汞；它不会用烟尘和硫堵塞城市空气和呼吸者的肺。
It does not distribute neurotoxic mercury around the planet; it does not clog city air and the lungs of those who breathe it with soot and sulfur.
临汾是地球上污染最严重的城市之一。
我们携手保护了我们的城市，也是在保护着我们的地球。
When we work together to protect our cities, we are also protecting our earth.
然而，较浅的颜色会折射走数量可观的辐射，使得建筑——更广义地说，就是城市和地球——凉爽一些。
Lighter colors, however, reflect back a sizable fraction of the radiation, helping to keep a building - and, more broadly, the city and Earth - cooler.
这主意看起来很酷：将全世界的屋顶刷白来反射更多的阳光，它能帮助城市和地球降温。
Seemed like a cool idea: paint the world's roofs white to reflect more sunlight, and it could help cool down both cities and the planet.
可悲的是，南非地球之友相信，尽管各个城市大派定心丸，却没有什么措施可以减少碳足迹。
Sadly, Friends of the Earth South Africa believes nothing can be done to lessen the carbon footprint, despite the reassurances made by the various cities.
今后几个月我们需要做的是向人们强调伦敦作为地球上最安全的伟大城市之一的基本事实。
What we need to do over the next few months is to underline to people the fundamental truth about London which is that it is one of the safest, great big cities on earth.
在华盛顿的美国宇航局总部的近地天体计划负责人林德利-约翰逊说，如果一颗足球场大小的小行星撞上了地球，其威力可以毁灭一座大型城市。
Lindley Johnson, head of the near-Earth object program at NASA headquarters in Washington, D.C., says an asteroid the size of a football field could wipe out a major city.
2008年，地球上第一次有超过半数的人居住在城市中。
In 2008, for the first time, more than half the planet's people lived in cities.
随着城市化进程的加速，城市的有机系统与地球大生物圈和资源体系之间相互作用也日益加深和扩大。
With the raped urbanization, a more extensive relationship and interaction has been established between the city organic system and earth’s biosphere and resource system.
《兴旺：以蓝宝地的方式寻找快乐》的作者丹·比特纳，出发去寻找地球上最幸福的地方，他认为他在四大洲发现了四个城市。
Dan Buettner, the author of Thrive: Finding Happiness the Blue Zone Way, set out to find the happiest places on earth, and he thinks he's discovered four contenders on four different continents.
如果想观看更多的城市夜景，或了解宇航员拍摄它们所用的技术，可以浏览地球大关的《城市夜景》系列。
You can see more nighttime imagery of cities and learn about techniques that astronauts use to photograph them in the Earth Observatory feature Cities at Night.
还有城市里开着名车吸着可卡因的小伙(两类活动均对保护地球无益)，顺便再想想托尼·布莱尔的碳足迹。
City boys drive around in big cars and snort cocaine, neither of which activities is very planet-saving, and just imagine Tony Blair's carbon footprint.
这对新人于本周一在位于地球最南端的城市乌斯怀亚交换了婚戒，该市比布宜诺斯艾利斯更靠近南极洲。
The couple exchanged rings on Monday in Ushuaia, the southernmost city in the world, closer to Antarctica than Buenos Aires.
就在最近今年2月，有人在Google地球上位于非洲海岸的大洋中发现了类似城市街道的网格状线。
And as recently as February of this year, what appeared to be grid-like lines that resembled city streets were spotted on Google Earth - in the ocean off the coast of Africa.
自诩为地球上最古老的城市，杰利科于本周庆祝其建城一万周年。
Designating itself as the oldest city on Earth, Jericho has also claimed this week as its 10,000-year anniversary.
而吉祥物的蓝色则表现了地球、梦想、海洋、未来、科技等元素，符合上海世博会“城市，让生活更美好”的主题。
The blue color mascot represents the elements including earth, dream, sea, future, technology and manifests the theme of World Expo "Better City, Better Life."
到2005年，几乎有7000万人口每年向城市迁移，导致了十亿寮屋居民(地球上每六个人中就有一个人是贫民)，一个很麻烦的趋势？
As of 2005, close to 70 million people were migrating to cities each year, resulting in a billion squatters (one in six people on Earth live as squatters). A troubling trend?
这对新人于本周一在位于地球最南端的城市乌斯怀亚交换了婚戒，该市比布宜诺斯艾利斯更靠近南极洲。
The couple exchanged rings on Monday in Ushuaia, the southern most city in the world, closer to Antarctica than Buenos Aires.
上海世博会主题馆一共有五座，分别是城市人馆、生命馆、地球馆、足迹馆和未来馆。
The theme for Expo 2010 covers five conceptual areas: Urbanian, City Being, Urban Planet, Footprint and Dream.
Soyus火箭携带了一颗将被送入地球同步轨道的军用通讯卫星升空。当它掠过俄罗斯乌拉尔群山中最大的城市叶卡捷琳堡时，制造了这场盛大的表演。
The Soyuz rocket, launched to carry a military communications satellite into orbit, created a spectacular light show as it passed over Ekaterinburg, the biggest city in Russia's Ural Mountains.
随着城市化进程的加速，城市的有机系统与地球大生物圈和资源体系之间相互作用也日益深入，日益扩展。
With the rapid process of urbanization, the interaction between cities and the biological circle as well as the resources on the earth have become more and more strong.
不过，一个个大坝，一片片矿山，一块块农田和一座座城市正在你眼前改造着地球。
But dam by dam, mine by mine, farm by farm and city by city it is remaking the Earth before your eyes.
人，赋予了城市文化、性格和创造力，才使得城市成为地球上一道多姿的风景。
It is people that give cities their culture, character and creativity, turning them into landscapes that beautify our earth.
随着城市化进程的加速，城市的有机系统与地球大生物圈和资源体系之间相互作用也日益加深和扩大。
With the raped urbanization, a more extensive relationship and interaction has been established between the city organic system and earth's biosphere and resource system.
超过半数的地球人口生活在城市，那些光污染最为严重的城市甚至连北斗七星也看不到。
More than half the world's population lives in cities, the most light-polluted of which prevent even the Big Dipper from being seen.
地球上大多数大城市，污水和废水都在水处理厂处理。
In most large cities around the globe, sewage and wastewater gets processed at a treatment plant.
这座城市不仅可以容纳上千户家庭，而且可以模拟地球上的重力环境。
The structure would not only house thousands of families, but its movements would simulate Earth's gravity.
这座城市不仅可以容纳上千户家庭，而且可以模拟地球上的重力环境。
The structure would not only house thousands of families, but its movements would simulate Earth's gravity.
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