UC知道要这篇文章的中文
来源：百度知道 编辑：UC知道 时间：2024/06/23 08:34:04
These questions are not easy to answer.
we know that is air around the earth. When planes fly,they need air for their wings. They can't fly wery high because they go higher the air is thinner.
If we go up about 1,200 kilometers(公里）from the earth,we find there is no air.
The sky is space(太空).In this apace,there is only the sun,the moon and the stars.
we know that is air around the earth. When planes fly,they need air for their wings. They can't fly wery high because they go higher the air is thinner.
If we go up about 1,200 kilometers(公里）from the earth,we find there is no air.
The sky is space(太空).In this apace,there is only the sun,the moon and the stars.
这些问题不是很好回答。
我们知道，地球上满是空气。当飞机飞行的时候，他们的翅膀需要空气。他们不能飞的太高，因为越高空气越稀薄。
如果我们到高空1200公里的时候，我们会发现，那里没有空气。
太空中的天空，以这个速度，只有太阳月亮和星星。