Disaster movies often portray catastrophes that destroy, or at least threaten to destroy earth's entire population.

灾难影片经常刻画那些毁灭，或者至少威胁着要毁掉上全部人类灾难。

That's because the earth's atmosphere shields us from harmful radiation.

这是因为保护我们免受辐射伤害。

One degree of latitude on the earth's surface equals almost 70 miles.

表上纬度一度相当将近七十英里。

Compared to earth's mass, Jupiter is thought to be much larger than that.

与质量相比，木星要得多。

Fast enough to escape earth's gravity and begin the shuttle era.

使其能以足够快速度逃离引力，从此开始航天飞机时代。

The journey of these emissions begins deep underground in the earth's core.

这些排放物来自于核深处。

It is earth's constant companion in the dark emptiness of space.

在黑暗空虚太空中，它忠实陪伴。

If one of these rocks hit's the earth's atmosphere, it becomes a meteor.

如果其中一个流星体撞上了，它就会变成流星。

These ocean waves are among the earth's most complicated natural phenomena.

这些海浪属于上最复杂自然现象。

Scientists have reason to believe that the earth's temperature is rising.

科学家们有理由相信温度正在上升。

For example, the earth's population is rising.

例如，上人口数量正在增加。

This and other gyres cover about twenty-five percent of the earth's surface.

太平洋环流和其他环流覆盖了表面约百分之二十五面积。

What is a rejection in love judged against the earth's 4. 5 billion year history?

和45亿年历史相比，爱情受挫算什么？

Long before dolphins swam the seas, their near look-alike ichthyosaurs inhabited the earth's oceans.

远远早于海豚在海中畅游之前，外形与其极为相似鱼龙就已经栖息在海洋中了。

Or, 'twenty miles below the earth's surface', definitely not immediately under it.

再有“表20英里以下”，指绝对不是指紧挨着表方。

The rainwater slowly dripped down to the earth's crust.

雨水缓缓滴落到壳上。

The Nile is the earth's resource, it belongs to the earth.

尼罗河是资源，是属于。

The earth's poles are called the North Pole and the South Pole.

极点称作北极和南极。

It describes how different colours of sunlight interact with the earth's atmosphere.

它描述了不同颜色太阳光是怎样与互相影响。

The other main factor at play is what's happening above the earth's surface.

另一个起作用主要因素是表面发生情况。