Without trees, many animals can not live on the earth. It's not easy for man to live on the earth, either.
没有树木，许多动物不能在地球上生活，人类在地球上生活也不容易。
On the earth, he made friends with a fox.
在地球上，他和一只狐狸交了朋友。
They are made in 10 minutes, used in 20 minutes and normally remain on the earth for over 100 years since they are hard to be broken down.
它们在10分钟内制成，在20分钟内使用完毕，但由于很难被降解，它们通常会在地球上残留100年以上。
For us common people on the earth, the dream of travelling around space will come true.
对于我们这些地球上的普通人，去太空旅行的梦想会成真。
The poor poet lay on the earth and wept, for the arrow had really flown into his heart.
可怜的诗人躺在地上哭泣，因为箭的确射入了他的心里。
Every creature on the earth should be treated as an equal member of the nature and be protected.
地球上的每个生物都应被视为自然界平等的一员，并受到保护。
When the radiant energy of the sun falls on the earth, it is changed into heat energy, and as a result the earth is warmed.
当太阳的辐射能落在地球上时，就变为热能，于是， 地球暖和起来了。
So he put two and two together, and decided there was an element in the sun that hadn't been discovered here on the earth yet.
所以他根据事实推断，认为太阳中有一种元素在地球上还没有被发现。
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。
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。
They can "see" houses and schools on the earth.
它们可以“看到”地球上的房子和学校。
One problem may be the method of landing back on the Earth.
其中一个问题可能是返回地球的方法。
All living things on the earth need other living things to live with.
地球上所有的生物都需要与其他生物共存。
Natural resources on the Earth are limited, so people should use them wisely.
地球上的自然资源是有限的，所以人们应该明智地利用它们。
There are many places on the earth that are still unknown to humans.
地球上还有许多人类未知的地方。
That's about 1,030,000,000 tons, or 121 kilograms for each person on the Earth.
这大约是10.3亿吨，或者说地球上每人121公斤。
After Hou Yi shot down the nine suns, everything began to grow on the earth.
后羿射下九个太阳后，地球上的万物都开始生长。
Many people look up to Yuan Longping because he spent all his life working for people on the earth.
许多人敬仰袁隆平，因为他一生都在为地球上的人们而工作。
At the same time, about 10% of all CO2 on the Earth is from activities that produce the food waste.
与此同时，地球上约10%的二氧化碳来自产生食物垃圾的活动。
Together, they can give light to an area of up to 6,400 square kilometers on the Earth for 24 hours.
它们合在一起可以给地球上高达6，400平方公里的区域提供24小时的照明。
By 2050 there will be too many people on the earth and over 100 million people will be living on the moon and other planets.
到2050年，地球上将人口过多，超过1亿人将生活在月球和其他行星上。
When people began to realise that there was not enough oil on the earth, they asked car makers to produce more efficient and less polluting cars.
当人们开始意识到地球上没有足够的石油时，他们要求汽车制造商生产能效更高、污染更少的汽车。
This is the unknown face of the moon that is always looking away from us, so we never see it from down here on the earth.
月球未知的一面总是远离我们，所以我们从地球上永远看不到它。
When plants shoot on the earth, their stems grow away from the gravity (the force that keeps your feet on the ground), and so they always shoot upwards.
当植物在地面上生长时，它们的茎生长得方向与重力相反（重力是让你的脚留在地面上的力量），因此它们总是向上生长。
Long before Man lived on the Earth, there were fishes, reptiles, birds, insects, and some mammals.
在人类出现很早以前，地球上就出现了鱼类、爬虫类、鸟类和一些哺乳动物。
It has a great deal to recommend it, since it might solve the problem of overcrowding on the earth.
它有很多可取之处，因为它可能解决地球上的过度拥挤问题。
When you couldn't open your mouth till the first two years on the earth, inner voice helps you understand things.
来到地球上的最初两年，你还不能开口说话，那时，内心的声音帮助你理解事物。
As geologists, we examine layers of sediment on the Earth' s surface to approximate the dates of past geologic time periods.
作为地质学家，我们研究地球表面的沉积层以估算过去地质时期的年代。
Then Houston, the control centre on the earth, called up and told me to use the tape to tape the bottom of the handrail and pull it off the telescope.
然后休斯顿，地球上的控制中心，打电话给我，让我用胶带把扶手的底部粘上，然后把它从望远镜上拉下来。
These changes are caused by anything that moves mass around on the Earth.
地球上物质体的任何移动都会引起这些变化。
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