The rivers of Africa bring life and abunda[ZiYuantun.Com]nce to their inhabitants, but they can also be the arena for some of nature's greatest challenges and dramas. Harsh seasonal cycles dictate the cour... 译文(2): 非洲的河流给它们的居民带来了生机和财富，但它们也可以成为自然界某些最大挑战和戏剧的舞{资源屯-ziyuantun.com}。严酷的季节周期决定了..。
