Lesson 38 The World Is a Big Place
第38课 世界是一个很大的地方
How many continents and oceans does the world have?
世界上有多少个大洲和海洋？
Can you point them out?
你能将他们指出来吗？
The earth is a very special planet,and it faces a big problem.
地球是一个非常特殊的星球，它面临一个很大的问题。
In the year 2010, the world's population was over 7 billion in total.
截止2010年，世界人口总数已经超过70亿。
It is increasing very quickly.
它还在快速增长。
By 2025, the world may have about 8 billion people.
到2025年，世界上可能有大约80亿人口。
And by 2050,the world's population may reach 9 billion.
到2050年，世界人口可能达到90亿。
There is another problem.
这儿有另外一个问题。
People can't live everywhere on the earth.
地球上的人们不能到处生活。
We can't live in water,and only about one third of our planet is land.
我们不能生活在水里，而我们星球只有三分之一是陆地。
But parts of this land are very dry.
但是陆地还有一部分非常干旱。
These dry places are called deserts.
这些干旱的地方称为沙漠。
Some areas have very high mountains.
一些地区有非常高的山脉。
Others have a lot of snow and ice.
另一些地方有很多冰雪。
It is not easy to live in those places.
在那些地方不容易生存。
There are seven continents:Asia,Africa.
共有七个洲：亚洲、非洲、
Australia,Antarctica,Europe,North America and South America.
澳洲、南极洲、欧洲、北美洲和南美洲。
Antarctica is covered with snow and ice all year round.
南极洲常年被冰雪覆盖。
Luckily, people can live on the other six continents.
幸运的是，人们可以生活在其他六个洲。
On these continents,there are green forests, fresh water and rich lands.
在这些洲，有绿色的森林，淡水以及富饶的土地。
Oceans cover two thirds of the earth's surface.
海洋覆盖了地球表面的三分之二。
The earth has only one big ocean,but we use these names for its different parts:
地球只有一个巨大的海洋但是我们给它的不同部分分别命名：
the Pacific Ocean,the Indian Ocean,the Atlantic Ocean and the Arctic Ocean.
太平洋、印度洋、大西洋和北冰洋。
The Pacific Ocean is the largest one.
太平洋是最大的一个。
The earth is our home now,and it will be our home in the future.
地球现在是我们的家园，未来也还是我们的家园。
It must be treated well for our children and for our children's children,too!
为了我们的孩子以及后代，必须好好对待地球！