It sort of resembled a savanna but without grass.

这就像是一个没有草的大草原。

So, they have to be careful when cruising the African savanna.

因此，它们在非洲大草原巡游时必须小心。

While endemic to most parts of Africa, they prefer the open woodland savannas, or the grasslands.

尽管短尾鹰在大部分的非洲是一种常见的鸟类，但是它们更普遍存在广阔的热带稀草原，或者是草原。

For instance, all of the plants and animals on the savanna make up the savanna community.

例如，热带草原系统的所有动植物构成了热带草原的一个群落。

Until now, thanks to some wild savanna sparrows.

多亏了某些野生稀草鹀，现在我们能用野鸟做实验了。

America during the last Ice Age, it was probably a savanna, with its own set of native earthworms.

当地可能就是莽原，还有原生种的蚯蚓。

A hundred thousand years ago, we were all in the African savanna.

十万年前我们都在非洲大草原。

Take the savanna, for example — a transitional biome between forests and grasslands.

以稀草原为例，它是林和草原之间的过渡生物群落。

The open savanna beneath the trees makes it easy to move around and feed.

下开阔的热带草原使得它可以轻松走动和觅食。

As the climate heated up, the forests receded, and humans ventured out into the savanna.

随着气候，林退化，人类铤而走险，进入热带草原。

But the thorny acacia are more numerous on the open savanna, where they need to defend themselves.

而有刺的金合欢更多地长在开阔的热带草原中，在那，它们需要保护自己。

It's 17,000 feet high, which makes its summit some 30 degrees colder than the surrounding savanna.

海拔超过五千米峰顶，温度比周围的热带草原低三十度左右。

Scientists can easily count the number of savanna elephants from an airplane because there are very few trees.

科学家们可以很容易地借助飞机数出稀草原的大象的数量，因为那里的木非常少。

Then, all of the savanna's carnivores eat animals that have gotten energy from plants somewhere along the line.

然后，热带草原上所有的食肉动物都以从植物中获取能量的动物为食。

Elevation and latitude crosscut to form mazes of high-altitude grasslands, chilly black-green conifer forests, temperate rhododendron thickets, and subtropical lowland savannas.

海拔和纬度横切，形成迷宫般的高海拔草原，寒冷的黑绿色针叶林，温带杜鹃花灌丛和亚热带低地稀草原。

In Africa, grasslands are known as savannas.

在非洲，草原被称为稀草原。

You can find a large amount of biodiversity in oak forests, marshes, savannas, and mangroves.

您可以在橡林、沼泽、稀草原和红林中发现大量的生物多样性。

14 thousand years ago, large parts of North America's landscape and wildlife were just like the savanna of modern Africa.

14000年前，北美大陆的大部分地区和野生生物就想是如今的非洲大草原。

Official figures from South America's largest savanna region, the Cerrado in Brazil show that deforestation has reached a new record.

南美洲最大的热带草原地区巴西塞拉多的官方数据显示，林砍伐创下了新的纪录。

There is a dangerous savanna predator in the bed.

床上有一个危险的稀草原捕食者。