他们生活在不稳定的平衡中，并且这是地球上最艰苦的环境之一。
They live in precarious balance and one of the toughest environments on earth.
只有通过保护环境，我们才能向子孙后代承诺给他们一个美丽的地球。
Only by protecting the environment can we assure our later generation of a beautiful planet.
其观点是，我们正在以一种超过使其可持续的额度从我们称为“地球环境银行”的账户余额中提现；我们的生活已经超出了我们的生态的承受能力。
The idea is that we are taking more out of what you might call the planet's environmental bank balance than it can sustain; we are living beyond our ecological means.
越来越多的科学家开始探索地球工程的替代方案，这通常指的是有意的对环境进行大规模操纵。
An increasing number of scientists are beginning to explore the alternative of geo-engineering—a term which generally refers to the intentional large-scale manipulation of the environment.
科学家们把咸海描绘成地球上生态环境最差的地方。
Scientists have described the Aral sea as the site of the worst ecological disaster on earth.
如果（陨石撞击地球的）力度足够大，相撞会扰乱整个地球的环境，并引发一场生态灾难。
If an impact is large enough, it can disturb the environment of the entire Earth and cause an ecological catastrophe.
想一想世界地球日，环境法，新闻中的环境问题，不难看出环保行动正在成为主流。
Earth Day, Environmental Laws, Environmental Issues in the news, being green was entering the mainstream.
经典地质学从牛顿那里借用了一个决定性的前提——地球过程独立于任何天文环境。
Classical geology borrowed a decisive, if unspoken, premise from Newton—the independence of Earth's processes from any astronomical context.
它是地球上最荒凉的环境的所在地，因为它应该是一个极其寒冷的地方。
It is home to the most inhospitable environment on the planet because it is supposed to be an extremely cold place.
每天都有一个主题，包括食物和时尚，着眼于人类是如何危害环境的以及如何拯救地球。
Each day has a topic, which includes food and fashion, looking at how humans harm the environment and how to save the planet.
史提夫：因为地球环境无法永远容忍汽车。
STEVE: Because the earth's environment can't tolerate cars forever.
如果要保护世界的水资源，就必须解决人类对地球环境和气候的影响。
The human impact on the earth's environment and climate must be addressed in order to protect the world's water resources.
在此之前，古生物学家普遍认为这一恢复过程需要上千万年——考虑到“大消亡”的程度，或者由于这些火山气体导致对地球环境的毒化程度。
Until now, palaeontologists have thought the recovery took tens of millions of years—a reflection either of the profundity of the Great Dying or of the toxic desert planet that the eruptions created.
研究人员警告称，冻结在极地区域的毒素数量不明，而这些有毒物质的释放会对地球环境以及人类自身安全造成极大威胁。
The researchers warn that the amount of the poisons in the polar region is unknown and their release could "undermine global efforts to reduce environmental and human exposure to them".
毕竟，根据目前的排放量和预期寿命来看，每少生一名英国儿童，非洲撒哈拉以南地区就有30余名妇女能养育一个孩子，同时仍可保证地球环境更洁净。
After all, based on current emissions and life expectancy, one less British child would permit some 30 women in sub-Saharan Africa to have a baby and still leave the planet a cleaner place.
操纵地球环境来抵御气候变化的主意好吗？这个主意来自哪儿？
Is manipulating Earth's environment to combat climate change a good idea and where, exactly, did the idea come from?
能谈谈地球环境对你的影响非常棒；但更重要的是将这些言语转换为行动。
It is great to talk about how important the Earth's environment is to you; but it is more important to put words into action.
雨水，河流和湖泊用Huygens观测到的实际上是液态的烃类，这些烃类如果处在地球环境的温度将会全部是气体。
The rain, rivers and lakes seen by Huygens are actually liquid hydrocarbons that would be gases at the cosier temperatures of Earth.
他们说，平均一只牧羊犬每年要吃194公斤肉和95公斤谷类食品，对地球环境产生巨大影响。
They say an average Collie eats 164kg of meat and 95kg of cereals a year, giving it a high impact on the planet.
对镜像细胞来说，地球环境几乎等同于奥利·斯特拉(olestra)，这是一种人体酶无法分解的人造脂肪。
And that would be one of the safety features of mirror life. To a mirror cell, Earth's environment is mostly the equivalent of Olestra, the synthetic fat that human enzymes can't break down.
另一些地球学家则研究人类活动对地球环境的影响，并制订出保护地球的措施。
Others study the impact of human activity on Earth's environment and design methods to protect the planet.
只是这次的讨论主题从基因工程换成了地球工程——没有随意性，而是有目的地改变地球环境。
This time the topic under discussion was not genetic engineering but geoengineering—deliberately rather than accidentally changing the world's environment.
地质学家寻找地球上的燃料和矿藏、研究自然灾害并制订保护地球环境的措施。
Geologists search for fuels and minerals, study natural hazards, and work to protect Earth's environment.
他说，”德州平坦丑陋，如果休斯敦或者达拉斯继续增长，地球环境协会不会有多大反应”。
The Sierra Club is not going to kick up a fuss if Houston or Dallas keeps on growing.
天文学家们同时还在对数量庞大的其他恒星系中可能的类似地球环境的星体进行筛选。
Astronomers are also closing in on a possibly huge number of Earth-like worlds around other stars.
天文学家们同时还在对数量庞大的其他恒星系中可能的类似地球环境的星体进行筛选。
Astronomers are also closing in on a possibly huge number of Earth-like worlds around other stars.
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