As geologists, we examine layers of sediment on the Earth' s surface to approximate the dates of past geologic time periods.

作为地质学家，我们研究地球表面的沉积层以估算过去地质时期的年代。

youdao

The High Coast site affords outstanding opportunities for the understanding of the important processes that formed the glaciated and land uplift areas of the Earth 's surface.

那些高站点海岸给那些理解形成的这重要过程买得起杰出机会使冰冻和土地举起地区的那些表面地球的。

youdao

SpaceShipOne will fly 100km (62 miles) above the Earth"s surface, just breaking through the planet"s atmosphere.

“太空飞船一号”将会在距离地球表面100千米（62英里）的上空飞行，这个高度刚刚超出地球的大气层。

youdao

The atmosphere is about twenty-percent oxygen and eighty percent nitrogen from Earth's surface to where space begins at one-hundred-twenty kilometers up.

VOA: special.2011.04.06

That is the lowest point on the earth's land surface so this dramatic drop in just a very short geographical area.

这是地球陆地表面的最低点,这急剧下降是在很短的地理范围内。

耶鲁公开课 - 旧约导论课程节选

Right. The most famous example is that when things fall near the surface of the Earth, they all have the same acceleration, and the acceleration that's common is called g, and that's 9.8 m/s^.

最有名的例子就是,当物体地球表面附近下落时,它们都拥有相同的加速度,这个普遍的加速度叫做g,大小为9.8m/s^

耶鲁公开课 - 基础物理课程节选

The areas are sparsely populated, and the earthquake was 62 miles beneath the Earth's surface.

NPR: Top Of The News

Here on the Earth's surface we live at the bottom of a gravity well.

BBC: Sticking solar power station where the Sun shines

But he never told his mother he was working a half mile under the Earth's surface.

CNN: Chilean miners waited for death