keep someone/something from something        
phrasal verb with keep verb uk/kiːp/ us/kiːp/ kept | kept
C2 阻止…做;防止…做
to prevent someone or something from doing something
  [ + -ing verb ] Try to keep the children from throwing food all over the floor. 别让孩子们将食物扔得满地都是。 
 Am I keeping you from your work? 我妨碍你工作了吗? 
 - More examples
 - It would be better if we could keep the baby from falling asleep until we get home.
 - I use this piece of wood to keep the door from blowing shut.
 - Jack is doing everything he can to keep the business from failing.
 - My husband always keeps me from getting too depressed about work.
 - Wrapping bread and storing it in the fridge keeps it from going stale so quickly.