см. тж. защищать от ; предотвращать
• Keeping dust away from delicate components ...
• This kept the solution from coming in contact with air.
• Teflon seals keep out moisture.
• This resistance protects the contacts against accidental overload.
• Nickel coating protects plug valves against ( or from ) corrosion.
• Oil seals safeguard the bearings against dust and grit.