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。

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。

The biggest challenge for the film's visual effects team was creating a photorealistic version of the African savanna while also remaining faithful to the source material.

对于影片视觉效果团队来说，最大的挑战是在忠实于原作素材的情况下，创造出一逼真的非洲版草原。

In other words, evidence suggesting African savanna elephants give each other names.

换句话说，这表明非洲草原大象会给互相起名字。

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。

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

年前我们都在非洲大草原。

In fact, it transforms from desert to lush savanna about every 21,000 years.

事实上，那里大概每隔21000年会从沙漠变成苍翠的稀树大草原。

It sort of resembled a savanna but without grass.

这像是一有草的大草原。

They walk twice as far as lions living on the savannas of East Africa.

它们行经的路程是生活在东非大草原上的狮子的两倍。

Fennec foxes use their large, swiveling ears to rapidly home in on activity beneath Sahara sands, while bat-eared foxes can pick up savanna sounds as slight as termites crawling and munching on grasses.

耳廓狐用它们旋转的大耳朵迅速定位撒哈拉沙漠下的活动，而蝠耳狐可以捕捉到热带草原上白蚁爬行嚼草的声音。

The Oak Openings Region is an amazing place that not only has these massive oak trees and oak savannas, beautiful wildflower prairies, but swamps too.

“橡树开放区”是一神奇的地方，那里不仅有巨大的橡树、橡树热带稀树草原、美丽的野花盛开的草原、还有沼泽。

The region originally covered by the Cerrado savanna in central and western Brazil was considered and fit for large scale agriculture until the 1970s when new research found ways of fixing nitrogen to the soil.

最初巴西中西部地区被塞拉多草原覆盖着，该区域一直被认为适合从事大规模农业，直到20世纪70年代，一项新的研究发现了将氮素固定在土壤中的方法。

After visiting Philadelphia, Louis would fly south with his wife and children so they could see the great savannas where alligators dozed in the swamp water and Turkey Buzzards soared in the sky.

访问完费城后，路易斯会和他的妻小们往南飞，这样他们可以看到稀树大草原了，那里有在沼泽中打盹的美洲鳄，还有在天空里翱翔的美洲鹫。

So this fruit, how they came across this was it's a fruit that you get in the savanna, so where the lions, and the elephants, and all those kind of guys roam.

这种水果，他们是怎么发现的这种水果，这种水果长在热带草原上，那里有狮子，大象和其他动物在游荡。

Within the savanna, all of the zebras make up the zebra population, all of the acacia trees make up the acacia tree population, and all of the lions make up the lion population.

在这热带草原里，所有的斑马构成了斑马这种群，所有的金合欢树构成了金合欢种群，所有的狮子构成了狮子种群。

It means we know every kind of sound that has ever been uttered by a savanna sparrow in this population over the course of many decades.

也是说，我们知道这稀树草鹀种群在数年间发出的每种声音。”

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

而有刺的金合欢树更多地长在开阔的热带草原中，在那，它们需要保护自己。

One consequence was a drying out of Africa, which caused apes to climb down out of trees and go looking for a new way of living on the emerging savannas.

其结果之一是造成了非洲的干旱，使得那里的类人猿纷纷从树上来到地上，到正在形成的大草原寻找新的生活方式。

Further to the north, the popular Woodland Park Zoo is home to more than a thousand animals and birds in habitats ranging from the African savanna to tropical forests.

再往北前进，极受欢迎的林地公园动物园里有超过一千只动物和鸟类，园内栖息环境从非洲大草原到热带雨林都有。

Like people, cheetahs can live in different habitats. Cheetahs live on the savanna and in areas with lots of plants. They also live on grasslands and in the mountains.

和人一样，猎豹可以生活在不同的栖息地。猎豹生活在热带稀树草原和植物茂密的地区。它们也生活在草原和山区。