africa词根是afri，词缀是ca
例句
1、
Living in Africa was very different from home and quite an experience.
生活在非洲完全不同于在家里，那真是一次不同寻常的经历。
2、
Many years later I returned to Africa but that's another story.
多年以后我又重返非洲，不过这是后话了。
3、
South America separated from Africa 200 million years ago.
2亿年前南美洲和非洲分离。
