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