It might have shown up as early as 2,000 BCE.

早在公元2000年前纽扣就有可能出现了。

Historians estimate that it was established somewhere around 950 to 900 BCE.

历史学家估计它建于公元前 950至 900 年左右。

Hammurabi ruled the new kingdom of Babylon from 1792 BCE to 1750 BCE.

汉谟拉比统治巴比伦新王国。从公元前1792到公元前1750。

Egyptian blue first appeared around 2600 BCE and eventually spread throughout Mesopotamia and the Roman empire.

埃及蓝首次出现于约2600BC，最终传遍美索不达米亚和罗马帝国。

Eventually, the Persians, under Darius I invaded Greece in 492 BCE.

最终，波斯人在大流士一世的领导下于公元前 492 年入侵希腊。

Starting around 200 BCE, the Roman Empire was building concrete structures that have stood the test of time.

从公元前200年左右开始，罗马帝国开始建造混凝土建筑，而这些建筑经受住了时间的考验。

Experts say this started a civil war in Rome in 49 BCE.

专家称这在公元前49年引发了罗马内战。

The once wealthy merchant lost everything when he was shipwrecked in Athens around 300 BCE.

公元 300 多年前，曾经富有的商人在雅典的海难中变得一无所有。

An idea proposed by Aristotle in 284 BCE that was widely accepted for over 1,500 years!

这是亚里士多德公元前 284 年提出的观点，已被广泛接受了 1500 多年！

Ithaca predicted a date of 421 BCE.

伊萨卡预测的日期是公元前421年。

In around 1200 BCE, we have these guys called the Celts who started to arrive in Britain.

大约在公元前 1200 年，我们有这些叫做凯尔特人的民族开始到达英国。

Aristotle said the same thing in the year 4 BCE.

亚里士多德在公元前4世纪就说过同样的事情。

Humans have been eating hallucinogenic, or " magic," mushrooms in ritual and spiritual contexts since at least 3,000 BCE.

至少从公元前3000年开始，人类就在仪式和精神环境中食用致幻蘑菇或“魔法”蘑菇。

Persephone is rarely represented in art before the 6th century BCE.

珀尔塞福涅在公元前 6 世纪之前的艺术作品中很少出现。

But the new evidence suggested a date in the 420s BCE.

但是新的证据表明日期是公元前420年。

It was 51 BCE and she was nearly 18 years of age, 10 years older than the new king.

那是公元前 51 年，她年近 18 岁，比新国王大 10 岁。

After around 1000 BCE, cavalry appeared in combat across much of Asia.

在大约西元前一千年之后，在亚洲大部分地区，在战斗中都能见到骑兵。

For about 300 years after its founding in 283 BCE, the library thrived.

早了一千多年。自公元前283年建成后的三百年间，图书馆繁荣发展。

Now you'll often see BCE (Before the Common Era) and CE (Common Era).

现在大家经常能看到BCE(公元前)和CE(公元前)。

One of the first libraries in the world was built in the 7th century BCE.

世界上最早的图书馆之一建于公元前7世纪。