太阳使地球上的湿气不断蒸发。
月球对地球的吸引力引起潮汐。
她的专长是数学、地球科学和化学。
八千万年前，地球是恐龙的天下。
火星自转一周的时间比地球长。
宇宙飞船进入地球大气层时被烧毁。
The spacecraft burned up as it entered the earth's atmosphere.
臭氧是地球防止紫外线辐射的屏障。
Ozone is the earth's barrier against ultra-violet radiation.
地球的周长大约为25 000英里。
古人认为地球漂浮在水里。
地球环绕自身的轴心转动。
臭氧层保护地球不受太阳紫外线的辐射。
The ozone layer shields the earth from the sun's ultraviolet rays.
地球沿椭圆形轨道运动。
生物多样性是里约地球峰会上的时髦用语。
太阳光线照射到地球时，大量的热被反射回太空。
When the sun's rays hit the earth, a lot of the heat is reflected back into space.
航天飞机重返地球大气层时因有摩擦力而减慢速度。
The force of friction slows the spacecraft down as it re-enters the earth's atmosphere.
要是没有太阳的辐射热，地球将会是一个冰冻的球体。
The earth would be a frozen ball if it were not for the radiant heat of the sun.
我们繁衍得如此之快，以至于人口数量威胁到地球的生态系统。
We are reproducing ourselves at such a rate that our numbers threaten the ecology of the planet.
他们回避了在行星的排列和地球上发生的事件之间有联系的看法。
They shunned the belief that there is a link between the alignment of the planets and events on the Earth.
该项目将使科学家们对地球大气层正在发生的情况有更新的了解。
The project would give scientists new insights into what is happening to the Earth's atmosphere.
如果它撞上了地球，就会砸出一个100英里宽的大坑并扬起巨大的尘埃云团。
If it had hit the Earth, it would have made a crater 100 miles across and thrown up an immense cloud of dust.
科幻小说作家们长期以来一直梦想着人类有一天可以离开地球移居到其它星球上。
Science fiction writers have long dreamed that humans might one day quit the earth to colonize other planets.
这是刘慈欣《流浪地球》的改编。
今天的火山是由地球形成早期被困在地球内部的气体所形成的。
Volcanoes today are the result of gases that were trapped in Earth's interior during the planet's early stages of formation.
他忠实地支持当地球队30年。
该年表列出了从地球诞生迄今的重要事件。
The timeline shows important events from the Earth's creation to the present day.
这位科学家研制出一个模型，能模拟全年地球的气候。
The scientist developed one model to simulate a full year of the globe's climate.
全世界科学家的共识是地球可能在未来几十年中变暖。
The consensus among the world's scientists is that the world is likely to warm up over the next few decades.
臭氧在距地球表面12至30英里的地方形成一个保护层。
Ozone forms a protective layer between 12 and 30 miles above the Earth's surface.
大多数网球是在硬地球场上打，但相当多的是在红土场地上打。
Most tennis is played on hard courts, but a substantial amount is played on clay.
如果一架宇宙飞船飞行超过每秒11公里，它就能摆脱地球引力。
If a spacecraft travels faster than 11 km a second, it escapes the Earth's gravitational pull.
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