急需一篇关于海洋小短文

As every one knows,70 percent of earth is covered
by the oceans.The oceans are very useful to us for we can get a lot of natural resource from them,such as oil.Also we can transform the energy in the oceans into electricity,it will solve the shortage of electricity.So the ocean is very important to us human beings.

总所周知，地球的百分之70是海洋。海洋对我们很有用，我们的自然之源来自它，如油。我们可以用海水来发电，它能解决电力紧缺的问题。海洋对于人类而言很重要。