定义

• "The scarf would protect the birds by preventing them from breathing in infected air particles."
• "I personally have numerous allergies which prevent me from smelling properly -"
• "- Never deactivate the firewall we have installed for you, even if it prevents you from accessing certain websites (which are, as it happens, not appropriate for the workplace)."
• "The museum staff hopes to discourage criminals from attending the exhibit, and wishes to prevent them from even approaching the venue."
• "It is guaranteed to prevent crime (as long as it's used in combination with several other methods, which I am also researching)."
• "In order to prevent the transmission of diseases in the workplace, I have put in place a new initiative that will encourage people to wash their hands after using the bathroom. I am reluctant to reveal too much information regarding the protocol as it may compromise its effectiveness."
• "Doctors believe that drinking red wine in moderation prevents cancer, heart disease and other ailments."
• "I would have replied earlier, however my accounting obligations prevented me from checking my email until the early afternoon, and then an unfortunate incident occurred during my bathroom break, when my necktie got caught in the zipper of my pants."