As Earth Scientists, we all well appreciate the need to better understand the causes of natural hazards.
作为地球科学家，我们深刻地体会到更为深入地了解自然灾害发生原因的必要性。
Scientists have described the Aral sea as the site of the worst ecological disaster on earth.
科学家们把咸海描绘成地球上生态环境最差的地方。
Profound differences in the geologies of Earth and Mars might stem -as two scientists are now suggesting -from Mars' developing only two to four million years after the birth of our solar system.
根据两位科学家现在的估测，地球和火星之间巨大的地理性差异可能是因为在太阳系形成后，火星的成长史只有短短的二百万到四百万年。
Profound differences in the geologies of Earth and Mars might stem - as two scientists are now suggesting - from Mars' developing only two to four million years after the birth of our solar system.
根据两位科学家现在的估测，地球和火星之间巨大的地理性差异可能是因为在太阳系形成后，火星的成长史只有短短的二百万到四百万年。
None of these tactics changes the clear consensus of a vast majority of scientists, who agree that the Earth is warming as greenhouse gas levels rise.
这些策略都改变不了绝大多数科学家的明确共识，他们一致认为随着温室气体升高，地球正在变暖。
There, scientists expect to find the same conditions as those in the early earth-and perhaps the same life-forms that thrived then.
科学家希望在那里发现与地球早期相同的状况，也许还可以发现在地球早期蓬勃生存的生命形式。
If, as many scientists believe, life can readily emerge under the right environmental conditions, it is possible that life arose on Earth more than once.
如果，如许多科学家所相信的那样，生命能够在适当的环境条件下迅速出现的话，很可能地球上不再只一次出现生命。
The news release promoting the latest edition of Britain's influential Times Comprehensive Atlas of the World hailed it as "the Greatest Book on Earth." Not the way climate scientists see it.
新闻稿正在极力推广英国最具影响力的泰晤士世界综合地图集，最新版本的地图集被外界称为“地球上最伟大的书籍”，可气象科学家们却不这么认为。
L Most scientists believe that if there is ET life anywhere in the Universe, it must be based on the chemistry of carbon, as life on Earth is.
l大多数科学家认为，太空中如果有外星生命，它们一定也和地球上的生物一样离不开碳化合物。
Vesta is what scientists term a protoplanet - a body that never acquired the proportions of "grown-up" planets such as Earth and Mars.
灶神星属于被科学家们称作“原始行星”的一类星体，这种星体不具备“成熟”行星——比如地球和火星——的尺寸。
Scientists think Earth started off as a waterless mass of rock.
科学家认为，地球最开始只是一团无水的岩石。
NASA scientists have calculated the satellite will break into 26 pieces as it gets closer to Earth.
经航天局的科学家计算，卫星在到达地球时会分解成26块碎片。
Scientists will map the brain as well as search for Earth-like planets-in what will be the International year of Astronomy, 400 years after Galileo first peered through a telescope.
科学家们将绘制大脑图，并寻找类地行星。另外，当年伽利略首次用望远镜观测天空400年之后，我们迎来了国际天文年。
Depending on our choices, scientists predict that the Earth could eventually warm by as little as 2.5 degrees or as much as 10 degrees Fahrenheit.
科学家相信，地球变暖少至2.5华氏度或者多达10华氏度完全取决于我们的选择。
Scientists have long been puzzled by what caused a sudden cooling of up to 8C (14F) just as the Earth was warming up at the end of the last ice age.
到底是什么原因使地球在上一个冰河世纪末尾开始转暖时，温度突然骤降了8摄氏度？科学家长久以来一直为这个问题所困扰。
Scientists now know, however, that the surface of the Earth is not as permanent as had been thought.
但是现在科学家们搞明白了，地球的表面不是像我们以为得那样一成不变。
For the first time Venusian scientists managed to land a satellite on the plant Earth, and is has been sending back signals as well as photographs ever since.
金星上的科学家首次把一颗卫星成功地送上了地球，此后卫星便不断地发回信号和照片。
Scientists say there could be tens of millions of smaller particles, such as bolts or chunks of frozen engine coolant, that cannot be discerned from Earth.
科学家说，空间中可能有数以千万计更小的颗粒，不能从地球上识别，比如螺栓、或冻结的发动机冷却剂的小块。
Climate scientists say Earth? S climate also is changing thanks to man? Made global warming, bringing extreme weather, such as heat waves and flooding.
气象科学家说地球的气候也在发生变化。人为造成的全球变暖带来了极端的天气，使得热浪肆虐，洪水泛滥。
For the First time Venusian scientists managed to land a satellite on the planet earth, and it has been sending back signals as well photographs ever since.
科学家第一次成功地将卫星转入轨道，它不仅已经发回了信号，而且还有照片。
As of now, scientists have not detected any differences between Earth-grown and space barley, said Sugimoto, who will present DNA analysis of his findings at a conference in Canada in July.
他说，目前科学家还没有发现地球上种植的大麦与太空大麦有什么不同。杉本学教授将于七月份在加拿大召开的一个研讨会上提交他的研究结果的DNA分析报告。
For the first time Venusian scientists managed to land a satellite on the planet Earth, and it has been sending back signals as well as photographs ever since.
研究金星的科学家们终于第一次将一个卫星降落在金星的地表上，并且从那时开始，它就早已传回了卫星讯号及图像。
Spented twice time as much as any previous one, Scientists researched the so-called "extincted events" which has happened on earth over the past 5 billion years.
科学家研究了过去5亿年间地球上发生的所谓的“灭绝事件”，时间跨度是先前任何一项研究的两倍。
The rodents will spend several months in space, in an effort to help scientists understand bone loss among astronauts in microgravity as well as bone disease on Earth.
这些老鼠将在太空呆上几个月，帮助科学家研究太空人在无重力情况下骨头的损耗情况和地球上的骨质疾病。
Skeptics of man-made global warming from the burning of fossil fuels have often pointed to solar radiation as a possible cause of a warming Earth, but they are in the minority among scientists.
人为气候变暖说怀疑论者常常把全球变暖归咎于太阳辐射的增强而非化石燃料的过量使用，但很少有科学家认同这一点。
For the first time Venusian scientists managed to land a satellite on the planet Earth, and it has been sending back signals as well as photographs ever since.
金星上的科学家首次把一颗卫星成功地送上了地球，此后卫星便不断地发回信号和照片。
For the first time Venusian scientists managed to land a satellite on the planet Earth, and it has been sending back signals as well as photographs ever since.
金星上的科学家首次把一颗卫星成功地送上了地球，此后卫星便不断地发回信号和照片。
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