By 2025,scientists predict the world will have 7.8 billion people.

By 2025,scientists predict the world will have 7.8 billion people.
By 2025,scientists predict the world will have 7.8 billion people.

By 2025,scientists predict the world will have 7.8 billion people.
科学家预计到2025年世界人口将达到78亿

科学家预计2025年前世界人口数量将达到78亿。