earth 指表面有陆地和水，人类所居住行星的名字。有时与“天”相对，泛指“地”。
world 通常相当于earth与globe，现多用指地球，地球上的世界，社会和人。
globe 指我们生活的地球，但强调其实体和圆形。
参考例句
1. In my world, sex only, no love! 在我的世界里，只有性，没有爱！
2. I am all alone in this world. 在这个世界上我总是孤独的。
3. Life find its wealth by the claims of the world, and its worth by the claims of love. 因为世界的需要，生命发现了它的富有；因为爱的需要，它发现了自己的价值。
英英解释
n.
1. everything that exists anywhere
2. all of your experiences that determine how things appear to you
3. people in general; especially a distinctive group of people with some shared interest
4. the 3rd planet from the sun; the planet we live on
5. the concerns of this life as distinguished from heaven and the afterlife
6. a part of the earth that can be considered separately
7. people in general considered as a whole
8. all of the living human inhabitants of the earth adj.
1. involving the entire earth; not limited or provincial in scope
