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树草原，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.

多亏了某些野生稀树草鹀，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.

以稀树草原为例，它是森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.

树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.

随着气候变暖，森林退化，人类铤而走险，进入热带草原。