The environmentalists were especially fearful for a group of monkeys that had become isolated, or separated, from other tamarins.

环保人士尤其担心一群金狮狨猴，这群金狮狨猴已经远离其他金狮狨猴或者说是和其他金狮狨猴分开了。

We could fit the smallest monkey, the pygmy marmoset, on here.

我们可以把最小猴子，侏儒狨猴，放在这里。

And it seems something has caught the eye of one of the marmosets, prompting a loud warning call.

似乎有什么东西引起了其中一只狨猴注意，它发出了一声。

The plant-life is still young and will take time to grow to a size usable for the monkeys.

上面植物都还没长成，需要一定时间才能长到让金狮狨猴使用大小。

Luis Paulo Marques Ferraz is executive director of the project that works to protect the numbers of golden lion tamarins.

路易斯·保罗·马克斯·费拉兹是保护金狮狨猴数量这个计划执行董事。

And they followed cells deep in the brain of a marmoset over the course of a year.

在一年时间里，他们跟踪了狨猴大脑深处细胞。

Let's look at the marmoset, a type of small monkey that lives in South America.

让我们看看狨猴，一种生活在南美洲小猴子。

Marmosets live in groups with others of their species and share a lot of responsibilities.

狨猴与同物种其他物种生活在群体中，并分担很多责任。

The Atlantic Forest of Rio de Janeiro state is the only place in the world where the golden lion tamarin still exists in the wild.

里约热内卢州大西洋森林是世界上唯一一个野生金狮狨猴仍存活于世地方。

That makes them among a few mammals— like marmosets— whose offspring utter sounds similar to babbling in babies.

这使它们成为少数哺乳动物（如狨猴）中一种，它们后代发出声音类似于婴儿牙牙学语。

From the world's smallest monkey, the pygmy marmoset weighing as little as 4 ounces to the world's largest monkey, the mandrill weighing as much as 77 pounds.

从世界上最小猴子，只有4盎司重侏儒狨猴到世界上最大猴子，重达77磅大狒狒。

Other primates, like macaques and marmosets, demonstrate similar patterns, so it's likely that gloss perception is something that developed a long time ago in our shared evolutionary history.

其他灵长类动物，比如猕猴和狨猴，也有类似模式，所以光泽感知很可能是在我们共同进化史上很久以前就发展出来。