Natural resources are very limited.They will be exhausted in the near future.It is not true.But it becomes a major concern around the world.www.cooyu.net This is a widely accepted fact.
It is a widely accepted fact that there is a major concern around the world for the exhaustion of limited natural resources in the near future，though it is unlikely to be true.
再如：
The Mississippi River is one of the longest rivers in the world，and in spring time it often overflows its banks，and the lives of many people are endangered.
The Mississippi River，which is one of the longest rivers in the world，often overflows its banks in the spring time，endangering the lives of many people. www.cooyu.net
