已解决
The world's most populous nation is China.
The highest mountain in the world is Himalaya.
The world's largest basin is Congo Basin.
The largest desert in the world is The Sahara.
The biggest lake in the world is the Caspian Sea.
The largest ocean in the world is the Pacific Ocean.
The largest nation in the world is Russia.
The longst wall in the world is the Great Wall.
The deepest lake in the world is Lake Baikal.
The Biggest plateau in the world is Brazilian plateau.
The highest waterfall in the world is Victoria Falls.
The lowest sea in the world is Dead Sea.