During that period, most of the world's big landmasses were connected in what scientists call Pangea.

在此期间，世界大部分大片陆地都连接在科学家所谓盘古大陆。

They could be rocky like Earth or water worlds without landmasses.

它们可能跟地球一样多岩石，也可能是没有陆地水世界。

The larger the landmass, the less of impact these change have.

地域越广，这种变化影响越小。

Historians estimated the empire once ruled more than 400 million people and had 25 percent of the earth's landmass.

历史学家估计，这个帝国治着超过4亿人口，拥有地球25%陆地。

It's believed the emergence of landmass began roughly 4 billion years ago.

也就是陆地升时期大约始于40亿年前。

Eventually, the landmass will break right off, giving birth to a brand new ocean.

最终，这片地块会分裂，孕育出一片崭新海洋。

The life that was hit the hardest was that lived on the smaller landmasses.

受到最大打击生命是生活在较小陆块之些。

An ice shelf is a large floating sheet of ice permanently attached to a landmass.

冰架是永久附着在陆地一块巨大漂浮冰层。

Roughly 70% of Earth's surface is water, and much of its landmass is unpopulated.

因为大约70%地球表面都是水，而即便是陆地，也还是有很多地方是无人居住。

Trees and vegetation currently cover over 50% of Singapore's landmass, reducing the need for air conditioning and encouraging low-pollution transportation.

目前，树木和植被覆盖了新加坡 50％ 以陆地，减少了对空调需求，并鼓励了低污染交通运输方式。

I think the way that the city's actually squeezed into this island landmass that kind of compresses.

我想这座城市真是拼命挤进了这块岛屿填成陆地，只得压缩它，压缩体验、压缩空间、压缩时间。

We are the countries of the continent of Europe, the northwestern portion of the larger landmass called Eurasia.

我们是欧洲大陆国家，位于亚欧大陆西北部。

We are the countries of the continent of Europe, the northwestern portion of the large landmass called Eurasia.

我们是欧洲大陆国家，位于亚欧大陆西北部。

As recently as 11,000 years ago, the two continents were actually connected by a landmass known as Beringia.

直到 1.1 万年前，这两个大陆实际还被一块叫做白令陆桥陆地连接在一起。

In extreme cases, like what might happen to the Maldives in a few decades, entire landmasses may become completely swallowed.

在极端情况下，比如马尔代夫在几十年后可能会发生怎样情况，整个大陆可能会被完全吞没。

China covers such a large landmass that the country has different landscapes and climates.

中国幅员辽阔，地貌和气候各不相同。

Today, Singapore's population is 100% urbanised and traditional farmland makes up just 1% of the city's landmass.

今天，新加坡人口 100% 城市化，传农田仅占城市土地面积 1%。

We need to figure out how eight billion people reside on this landmass.

我们需要弄清楚 80 亿人是如何居住在这片陆地。

Besides being useful weather cues, under the right conditions, they can indicate landmasses.

除了作为有用天气线索外，在适当条件下， 它们还可以指示陆地。

When the Rodinia supercontinent broke up circa 750 million years ago, it left large landmasses vulnerable to weathering.

大约 7.5 亿年前， 当罗迪尼亚超级大陆解体时，大片大陆容易受到风化作用影响。