最近的一项研究警告我们地球上自然资源枯竭的危险。

One recent study warns us of the danger of the exhaustion of natural resources on Earth.

我们地球上的资源是有限的。

The resources of our planet are finite.

老师告诉我们地球围绕太阳转。

The teacher tells (told)us that the earth goes around the sun.

我们地球的未来掌握在你的手中。

The Future of Our Planet is in Your Hands.

地理老师告诉我们地球是扁平的。

The geography teacher told us that the earth is oblate.

月球居民们“也会谈到地球光，正像我们地球人谈到月亮光一样。”

They would speak of earthlight just as we speak of moon-light.

这使我认识到我们地球有多么珍贵！

This report makes me to realize that how valuable our earth is.

当然，在我们地球上我们人太小，不能打扫火山，

On our earth we are obviously much too small to clean out our volcanoes.

在我们地球上，哪里有水，哪里就有生命。

On our planet, where there's water, there's life.

这是我们地球上的温室，丛林，即热带雨林。

This is our planet's hothouse, the jungle, the tropical rainforest.