Ancient Greece was an advanced civilization.

古希腊是个先进的文明国家。

youdao

It have left an automatic messenger behind to await the possible awakening of an advanced civilization.

身后可能留下一种自动信息通讯装置，以等待高级文明的可能的萌发。

youdao

But the Milky Way Galaxy contains some 250 billion stars, and even with a million civilizations, less than one star in 200000 would have a planet inhabited by an advanced civilization.

但是银河系包括大约2500亿颗星星，其中甚至有一百万个文明社会，在二十万颗星星中不到一颗星星拥有居住有先进文明社会的行星。

youdao

Staring an advanced civilization straight in the face, the Roman dismissed it as either barbarism or decadence.

WSJ: Still Under Cleopatra's Spell

And what times we are living in, with the Large Hadron Collider on the one hand, and on the other, Nick Bostrom's very logical argument that we're actually living in a simulation operated by an advanced future civilization.

BBC: How sci-fi moves with the times