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，这群金狮狨已经远离其他金狮狨或者说是和其他金狮狨分开了。

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

我们可以把最小的子，侏儒狨，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的注意，它发出了一声响亮的报。

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

上面的植物都还没长成，需要一定时间才能长到让金狮狨使用的大小。

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数量这个计划的执行董事。

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

一年的时间里，他们跟踪了狨大脑深处的细胞。

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

让我们看看狨，一种生活南美洲的小子。

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

狨与同物种的其他物种生活群体中，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.

里约热内卢州的大西洋森林是世界上唯一一个野生金狮狨仍存活于世的地方。

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）中的一种，它们的后代发出的声音类似于婴儿的牙牙学语。

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.

从世界上最小的子，只有4盎司重的侏儒狨到世界上最大的子，重达77磅的大狒狒。

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，比如猕和狨，也有类似的模式，所以光泽感知很可能是我们共同的进化史上很久以前就发展出来的。