地球

The globe is rolling round all the time.

球一直在转动。

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

球既公转又自转。

The earth makes a yearly revolution around the sun.

球每年绕太阳一周。

The moon is a satellite of the earth.

月球是球一颗卫星。

Man is a dweller on the earth.

人类是球寄居者。

The earth orbits the sun once every 365.25 days.

球每365.25天绕太阳轨道一圈。

The lunar stone is different from earth's.

月球石头和球。

The earth crosses the tracks of certain comets.

球穿过某些彗星轨线。

How do you demonstrate that the earth is round?

你怎样证明球是?

The Earth is not a perfect sphere.

球并是一个完全球体。

The earth's shadow on the moon was quite distinct.

月球上球阴影很清晰。

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

球绕着太阳旋转要一年时间。

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

火星自转一周时间比球长。

Many types of animal have now vanished from the earth.

许多动物物种现已从球上绝。

Jupiter's gravity slingshots the fragments toward Earth.

木星重力使碎片加速飞向球。

The earth rotates on its axis once every 24 hours.

球每24小时依其轴心自转一次。

The Pacific Ocean is the biggest ocean in the earth.

太平洋是球上最大海洋。

The shape of the earth is an oval.

球形状是个椭形。

We use a globe in our geography class.

我们在理课上使用球仪。

There are 37 lectures, major headings are geochronology, radiogenic isotope geochemistry and stable isotope geochemistry.

这里有37讲，主要是质年代学、放射性位素球化学和稳定位素球化学。