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Helo everyone, today I talk about our world. The world we live in is 7 billion people. That's a terrible number. You know we live in a modern world with many advanced technologies . It's a very perfect world But many places are still socially backward. In many places, there are still outdated customs and epidemics raging. But they still don't get help in a timely manner so it still happens. I think living in this world people need a unity. I wish that backward places will be helped to make the world a better place.