The total forest cover of the earth is decreasing.
地球上森林覆盖的总面积正在减少。
It went across one fourth of the earth.
它跨越了地球的四分之一。
The earth is our mother; I am the son of the earth.
地球是我们的母亲，我是地球的儿子。
We should clean them right off the face of the Earth.
把它们从地球的表面上彻底清除。
I'd go to the ends of the earth to see her again.
哪怕走遍天涯海角我也要再见她一面。
The new planet is about ten times the size of the earth.
这个新发现的行星大约是地球大小的10倍。
The orbit of this comet intersects the orbit of the Earth.
这颗彗星的轨道和地球的轨道相交。
The age of the earth is reckoned at about 4 600 million years.
估计地球的年龄大约为46亿年。
The equator is an imaginary line around the middle of the earth.
赤道是一条假想的环绕地球腰部的线。
Keep looking—they can't just have vanished off the face of the earth.
继续找—他们不可能就此从地球上彻底消逝的。
Are you a friend of the earth?
你是地球的朋友吗？
The spin of the Earth provides an extra push.
地球的自转提供了额外的推力。
I must be getting somewhere near the centre of the earth.
我一定是在接近地心的某个地方。
"Things are crowding up out of the earth," she ran on in a hurry.
“土里的东西都在往外钻。”她急急忙忙地说。
If the atmosphere were like that of the earth, this might be possible.
如果大气层和地球的一样，这是可能的。
You are the salt of the earth.
你们是世上的盐。
I want to be a Friend of the Earth.
我想要是一位地球的朋友。
The word means "study of the Earth".
地质学的字面含义是“研究地球的科学”。
The Superman is the meaning of the earth.
超人是大地的意义所在。
Me too.Let's be good friends of the Earth.
我也是。让我们成为地球的好朋友。
Look at the photograph of the Earth again.
再次看地球的照片。
地球的朋友吗？
Have you heard about Friends of the Earth?
你听说过地球的朋友了吗？
What is a Friend of the Earth? Do you know?
一位地球的朋友是干什么的？你知道吗？
Almost three quarters of the Earth is water.
地球表面约四分之三是水。
We are part of the earth and it is part of us.
我们是大地的一部分，大地也是我们的一部分。
On his map, the surface of the earth is convex.
在他的地图上，地球表面呈圆凸状。
Oceans cover more than 71 percent of the earth.
海洋覆盖了超过71%的地球表面。
What must we do to be good friends of the Earth?
我们必须做什么成为地球的好朋友？
What must we do to be good friends of the Earth?
我们必须做什么成为地球的好朋友？
应用推荐