см. тж. освобождать от ; удалять
• To clean the rust from the surface ( or To clean the surface of the rust), ...
• Cleanse it of bacteria and humidify.
• The screen can be cleared of stone after the belt is stopped.
• The carbon is saved and the countryside is freed of soot.
• The difficulty of freeing the enzyme from impurities ...
• To remove the impurities from the solution, ...
• This rids oil of corrosive gases.
• The gas begins to flow before the arc is started to purge the joint of atmospheric contaminations.