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其中一只狨猴注意，它发出一声响亮警报。

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

在一年时间里，他们跟踪狨猴大脑深处细胞。

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。

One of the hallmarks of being a hominid is having opposable thumbs: stronger, longer and more flexible than the thumbless hands of a spider monkey or the non-opposable thumbs of a marmoset.

比蜘蛛猴无拇指或绒猴不对生拇指更强壮、更长、更灵活。