Earth people know that there is no sovereignty, there is no country.

地球人都知道，没有主权，就没有国家。

youdao

Many people know that rubbish is a big problem on planet Earth.

许多人都知道垃圾是地球上的一个大问题。

youdao

Therefore, just going through the people you know, you should be able to contact any person on earth.

他推论道，每个人至少都认识几个人，而那些人又认识其他人，所以只要通过你认识的人，你就应该和地球上所有的人取得联系。

youdao

He said the Earth is like a large mechanical device that will survive only if people living on it know how to operate it correctly.

VOA: special.2010.05.30

Okay. I know one person in the department who is one of the most connected people I know on earth.

好的，我认识系里的一个人,他是我认识的人中连接性最强的人。

耶鲁公开课 - 心理学导论课程节选

There is nowhere on earth where you can just say 'Wimbledon' and people won't know what you're talking about.

CNN: Game, set and match: What Wimbledon says about the British