Man is a comparatively new creature on the surface of the earth.

人类是地上出现得比较晚的一种生物。

At some unspecified time in earth s past, God created microscopic algas in the oceans.

在地历史上的某个时候，上帝创造了海洋中的微小海 藻 。

Pigeons navigate less accurately when the earth’s magnetic field is disturbed.

地磁场受到干扰时，鸽子的道航能力就会变得不准确。

The earth revolves both round the sun and on its own axis.

地既公。

Let's pretend we're on the spaceship orbiting round the earth!

让我们假装是在沿轨道绕地运的宇宙飞船上!

The rotation of the earth round the sun takes one year.

地绕着太旋要一年时间。

The earth orbits the sun once every 365.25 days.

地每365.25天绕太轨道一圈。

The earth is one of the planets in the Galaxy.

地是银河系中的一。

They put a weather satellite into orbit round the earth.

他们把一颗气象卫送入环绕地的轨道。

The moon is a satellite of the earth.

月是地的一颗卫。

It links the human heart to the life of the earth.

它把人的心脏和地生命联系起来。

Zounds of meteors, launched by an evil alien intelligence, are about to destroy Earth.

邪恶狡猾的外人发动了流行雨似的攻击，想要摧毁地。

Terrestrial longitude is measured in degrees east or west of the Greenwich meridian.

地的经度是用格林尼治子午线向东或向西的度数来表示的。

Mars takes longer to revolve on its axis than the earth.

火一周的时间比地长。

The lunar stone is different from earth's.

月的石头和地的不同。

I’m afraid geophysics is rather a closed book to me.

我对地物理学一窍不通。

The creatures starts to vanish from the Earth, nature temperament also  pejoration day-by-day.

生物开始一种接一种地从地上消失，大然的脾气也一天天的变坏。

The earth makes a yearly revolution around the sun.

地每年绕太一周。

Explain how the air temperature changes from the earth's surface to the lower thermosphere?

如何从地表面到低的热气层来改变大气的温度?

Many types of animal have now vanished from the earth.

许多动物物种现已从地上绝迹。