“unrenewable”造句，怎么用unrenewable造句

Books on that shelf are unrenewable.

Coal, petroleum and natural gas are unrenewable resources, so it is important to improve energy utilization and save mineral resources.

As an unrenewable resource, farming land has to be made highly efficient use of.

Biorefinery is a new industrial mode substituting renewable biomass for unrenewable fossil resource to produce bioenergy or chemicals and securing the sustainable development of social economics.