to reclaim / to clean up (contaminated land)
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'Bonifica' = reclamation/clean-up. Italy has many 'siti da bonificare' (sites requiring clean-up).
Bisogna bonificare i terreni contaminati dalle industrie.
We need to clean up the land contaminated by industries.
La bonifica del sito industriale durerà anni.
The clean-up of the industrial site will take years.