英语翻译Is the sky full of air?We know that there is air around

英语翻译
Is the sky full of air?We know that there is air around the world.We could not breathe without air.Airplanes could not fly without air.They need air to lift their wings.Airplanes can not fly very high because as they go higher,the air gets thinner.If we go fat enough away from the earth,we find that there is no air.What is the sky?Nothing.Where is it?It is all around the world.The sky is space.In this space there is nothing except the sun,the moon,and all the stars.The moon is about 390,000 kilometers away from the earth.An airplane cannot fly to the moon because the air reaches to an altitude of only 240 kilometers.Then there is no air.But there is something that can fly even when there is no air.It is a rocket.How does a rocket fly?If you want to know,get a balloon and then blow it up,until a rocket fly?If you want to know,get a balloon and then blow it up,until it is quite big.Do not tie up the neck of the balloon.Let go!The balloon will fly off through the air very quickly.The air inside the balloon tries to get out.It reaches out through the neck of the balloon and this pushes the balloon through the are.It does not need wings like airplane2.Dolphins(海豚) are very clever animals.They are usually not more than 3.3 meters long.They are found in many parts of the world.Dolphins like living together.Sometimes people can see groups of them swimming and playing in the water.It is impossible to tell how many there are around one ship,but there may be thousands.Dolphins live on fish,but they do not spend all their time looking for them.They can spend more than six minutes below the surface of the water without coming up for air.Scientists say that dolphins are very much like humans.So it might be possible to teach them to talk.Some of the habits of humans of dolphins are not the same as those of men,though it is certain that dolphins enjoy being with humans.Perhaps that is why they often go round after ships.

呵呵,有点长哦~
天空全是空气吗?我们知道世界上遍布空气.没有空气我们无法呼吸,飞机飞不上天.飞机需要空气拉升他们的机翼.加入我们离地球足够远的话,我们会发现这里是没有空气的.到底什么是天空?什么都不是.它在哪里?围绕这世界.天空就是宇宙.宇宙中除了天阳,月亮,星星什么都没有.月亮离地球有39万千米远.飞机飞不到那么远,因为只能飞到海拔240千米高.那里再往上就没有空气了.但是也有一些没有空气也能飞的,它就是火箭.火箭是如何做到的?你如果想知道的话,找一个气球,然后吹起来,直到足够大.不要把气球挤住.撒手!气球将在空气中乱窜在气球口部的气体往外喷,它往外喷并推动气球运动.它无需飞机的机翼.海豚是非常聪明的动物.他们一般不会超过3.3米长.他们在世界各个地方被发现.海豚喜欢群居.有时候人们会发现水中成群结对的海豚游泳嬉戏.不可能数清楚到底有多少,但是数千是有了.海豚以鱼为生,但是他们不会花费所有时间去寻找.他们能够在水底不呼吸待6分钟以上.科学家认为海豚很像人类.所以很有可能教会他们说话.一些人类的习惯与海豚不一样,尽管海豚喜欢和人类待在一起.可能这就是为什么海豚喜欢跟在船只后面吧!