专家还表示，非洲的自然灾害已经变得更加频繁、更加严重了。
Experts also say natural disasters in Africa have become more common and more severe.
youdao
它们变得更加警惕，移动也更加频繁。
They become more vigilant and keep on the move more.
应用推荐
模块上移
模块下移
不移动