The Earth orbits in an ellipse.
地球沿椭圆形轨道运动。
The earth revolves on its axis.
地球环绕自身的轴心转动。
The earth is almost 25 000 miles in circumference.
地球的周长大约为25 000英里。
Eighty million years ago, dinosaurs ruled the earth.
八千万年前，地球是恐龙的天下。
The ancients conceived the earth as afloat in water.
古人认为地球漂浮在水里。
Her speciality is maths, earth science, and chemistry.
她的专长是数学、地球科学和化学。
Biodiversity was the buzzword of the Rio Earth Summit.
生物多样性是里约地球峰会上的时髦用语。
Mars takes longer to revolve on its axis than the earth.
火星自转一周的时间比地球长。
The moon exerts a force on the earth that causes the tides.
月球对地球的吸引力引起潮汐。
The ozone layer shields the earth from the sun's ultraviolet rays.
臭氧层保护地球不受太阳紫外线的辐射。
The clouds gathered and showers poured down upon the parched earth.
云聚积起来，大雨倾泄在干透了的大地上。
The earth would be a frozen ball if it were not for the radiant heat of the sun.
要是没有太阳的辐射热，地球将会是一个冰冻的球体。
When the sun's rays hit the earth, a lot of the heat is reflected back into space.
太阳光线照射到地球时，大量的热被反射回太空。
They shunned the belief that there is a link between the alignment of the planets and events on the Earth.
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。
If it had hit the Earth, it would have made a crater 100 miles across and thrown up an immense cloud of dust.
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。
Science fiction writers have long dreamed that humans might one day quit the earth to colonize other planets.
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。
Arrows would continue to fly forward forever in a straight line were it not for gravity, which brings them down to earth.
要不是重力使箭掉落地上，它将会一直沿直线往前飞行。
Overall, earth is warming at a rapid pace.
总的来说，地球正在快速变暖。
The early Earth contained abundant radioactive materials.
早期地球含有丰富的放射性物质。
Global warming could bring disastrous effects to Earth, so it is high time for us to protect our earth.
全球变暖可能给地球带来灾难性的影响，我们是时候应该保护地球了。
They banked the earth (up) into a mound.
他们把土堆成一个土丘。
She seems very grounded and down-to-earth.
她看上去非常现实，注重实际。
The earth-moving trucks and cement mixers lay idle.
运土卡车和水泥搅拌车都闲置着。
There was no reason on earth why she couldn't have moved in with us.
她不能跟我们一起搬进来根本没有道理。
He employed a scorched-earth policy, destroying villages and burning crops.
他采取了焦土政策，摧毁村庄并烧掉了庄稼。
The warming of the Earth and the consequent climatic changes affect us all.
全球变暖以及随之而来的气候变化影响我们每个人。
The earth shook and swayed and the walls of neighbouring houses fell around them.
地面晃动起来，附近房子的墙壁在他们周围坍塌了。
When he came down to earth after his win he admitted: "It was an amazing feeling."
当在胜利之后回来面对现实时他承认：“当时感觉太棒了。”
He crawled from print to print, sniffing at the earth, following the scent left in the tracks.
他从一个脚印爬到另一个脚印，嗅着泥土，跟着路上留下的气味。
Despite all the hoopla, Palo Alto's 100th birthday party is actually designed to be a simple, down-to-earth affair.
除了喧闹外，帕罗奥图一百岁生日聚会实际上被设计为一个简朴实惠的活动。
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