in the world around the world 和all over the world的区别,请详细的讲一边

the most beautiful place in the world.世界上最美丽的地方
I took a year off work to travel around the world.我请了一年假环游世界
She is famous all over the world.她举世文明
in the world（用于加强语气）
Everyone else is stressed but he doesn't seem to have a care in the world.别人都很紧张,但他好象一点也不在乎.
There's no need to rush-we've got all the time in the world.没有必要急忙忙的---我们有的是时间.
What in the world are you doing?你到底在干什么
in the world
世界上,究竟
all over the world
adv.全世界