This service guarantees that the United States of America shall forever remain the last, best hope on Earth.

这种为国效力的精神保证美利坚合众国永远是地球上最后、最大的希望。

youdao

The Grand Canyon is one of the natural wonders of the Earth, located in Arizona in the United States.

大峡谷位于美国的亚利桑那州，是地球上的自然奇观之一。

youdao

There will be hundreds of rallies, workshops and other events around the United States, where Earth Day was born, and hundreds more overseas, where it is now celebrated in 192 countries.

世界地球日的发起国美国及其他192个国家，还将有上百次游行、工作坊等各类环保活动。

youdao

One of its official organizers in the United States is a Washington based nonprofit group called Earth Day Network.

VOA: special.2010.04.21

"The the United States is a melting pot of any nations you can name it on earth."

VOA: standard.2010.06.22

And if we work together right now, with common purpose and common effort, I have no doubt we will build an economy that lasts, and we will remind the world just why it is that the United States of America is the greatest country on Earth.

WHITEHOUSE: President Obama Speaks On Promoting American Manufacturing and Exports | The White House

As the past few years have proved, building trains on Earth, particularly in the United States of America, can be a pretty daunting task.

FORBES: Connect

The United States of America did not become the most prosperous nation on Earth by sheer luck or happenstance.

WHITEHOUSE: Moving Forward on a New Foundation