These geladas are being forced higher into the mountains.

这些杰拉达狒狒被迫迁移到更高的山地。

These are gelada monkeys and they love stealing the farmers' grain.

敌人就是狮尾狒狒，他们喜欢偷农民的粮食。

Because the area is next to a national park, the gelada are protected.

由于这里靠近国家公园，所以狮尾狒狒是受保护的。

Yes. Could the gelada monkey provide an important clue about the development of human language?

是的。狒狒能否提供对人类发展有用的重要线索？

Dereje's done it. He's seen off the gelada.

德杰成功了。他赶走了狒狒。

He drives them off, but the geladas are cunning these males were only a decoy.

德杰赶走了它们，但狒狒是如此狡猾，这几只只是声东击西的诱饵。

Gustison and her colleagues tested out that rule of human language on the calls of geladas—relatives of baboons.

古斯特森和她的同事在人类的亲戚狒狒身上检测人类语言的这种规则。

Hello. Yes, that wonderful sound you just heard was in fact a gelada – a kind of monkey – which we'll be hearing more from later in the programme.

大家好。是的，刚刚你所听到的声音其实是狒狒的叫声，它是一种猴子，在接下来的节目里，我们还将听到更多狒狒的声音。

The gelada, on the other hand, is the only one that can produce vocalisations – or sounds from the vocal chords in the throat while doing this.

另一方面，只有狒狒能够在吧嗒嘴时从声带发出声音。

So that's what we think is going on with the geladas, is that they have so much to say, so they're finding these strategies to make what they're saying more efficient.

我们认为狒狒的情况是，由于要交流的东西很多，因此它们采用这样的方式让其叫声更为有效。