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Insects have developed sophisticated societies that, in compexity,are the closest thing in nature to our own cities.
昆虫已经进化发展为成熟的社会而且复杂，实际上已经接近我们的生活 The insects that built this structure in Argentina
在阿根廷打造这种结构的昆虫
dominate the surrounding grasslands
主宰了周遭的草原
thanks to skills that seem almost more human than insect.
这种技术几乎像人类 甚于像昆虫
It's a metropolis, a home to millions of ants.
这是一个大都会 数百万只蚂蚁栖息在这儿
The colony needs a huge supply of food.
这个蚁群需要大量食物供应
It's surrounded by grass,
周围全是青草
but the ants themselves can't digest a blade of it.
但蚂蚁本身连一根也消化不了
Nonetheless, they collect it.
尽管如此，还是照样收集
Although they're all the same species,
虽然它们都是同一个物种
they exist in different shapes and sizes.
形状和尺寸却各自不同
The heads of these big-jawed individuals
这一只只大颚蚂蚁
are not full of brain... but brawn.
脑袋算不上聪明 力气倒是不小
They give the species its name. They are grass cutters.
它们是这种蚂蚁名称的由来 叫做割草蚁

重点解释

It's a metropolis, a home to millions of ants.这是一个大都会，数百万只蚂蚁栖息在这儿

millIons of成百万的, 许许多多的

There are millions of living things on the earth.

世界上有数以百万计的生物。

There were millions of people in the square.

广场上有好多好多人。

The colony needs a huge supply of food.这个蚁群需要大量食物供应

supply of劳动力供给量

Our country has a bountiful supply of food.

我们国家有充足的食物供应。

He had exhausted his supply of water.

他已耗尽了全部供水。

they exist in different shapes and sizes.形状和尺寸却各自不同

exist in存在于

That word doesn't exist in English.

英语中没有这个字。

The heads of these big-jawed individuals are not full of brain... but brawn.这一只只大颚蚂蚁脑袋算不上聪明，力气倒是不小

full of充满 ...

She is always full of whims and fancies.

她老是充满怪念头。

She has a book full of cuttings about her film.

她有一本书贴满了关于她的一些影片的剪报。