关于unrenewable的百科

• unrenewable造句怎么写

• Booksonthatshelfareunrenewable.Asanunrenewableresource,farminglandhastobemadehighlyefficientuseof.Coal,petroleumandnaturalgasareunrenewableresources,soitisimportanttoimproveenergyutilizationandsavemineralresources.Biorefineryisanewindustrialmodesubst...
• 2017-12-3019195