The world's really has one big ocean,but we have names for different pieces of it.

The world's really has one big ocean,but we have names for different pieces of it.
The world's really has one big ocean,but we have names for different pieces of it.

The world's really has one big ocean,but we have names for different pieces of it.
世界上实际上只有一个巨大的海洋,但是我们给它不同的部分起了不同的名字.

这个世界其实只有一个巨大的海洋，但是我们给不同的地方起了不同的名字。