英语翻译

英语翻译
So back to our model.Here’s another thought for you.The scale for our model is 1 to 10 billion.Now,let’s suppose that we want to go to the nearest star system,the neighbor to our solar system.That would be the Alpha Centauri system,which is a little less than four and a half light years away.Okay.Let’s walk it on our model.Here we are on the East Coast of the United States.
【So if we want to make it all the way to Alpha Centauri,we have to hike all the way to the West Coast,roughly a distance of 2,700 miles.And that’s just the closest one.】