1, Land resources are important and unrenewable.

2, Geological relics are precious unrenewable heritages!

3, Books on that shelf are unrenewable.

4, At the same time, extensive utilization of unrenewable energy has worsened our polluted and fragile environment, and it would beyond retrieve if we still did nothing for this crisis.

5, Coastal resources, precious and unrenewable treasure, play an important role in the economy.

6, But after comparing them, the author thinks that the user cost approach is better to calculate the self-value depreciation of the unrenewable resources.

7, As we know that cultural heritage is one of the unrenewable valueless resources.