China is one of the oldest civilizations in the world.
中国是世界上最古老的文明之一。
China is one of the oldest civilizations in the world.
中国是世界上文明古国之一。
China a is one of the oldest civilizations in the world.
中国是世界上最古老的文明之一。
China is one of the world's oldest civilizations.
中国是世界上最古老的文明之一。
China is one of the world's oldest civilizations.
中国是世界上最古老的文明之一。
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