walk in on somebody phrasal verbphr v INTERRUPTto go into a room and accidentally interrupt someone who is doing something private that they would not want you to see 进屋撞见〔某人正在干不想让人看到的私事〕walk in on • Ever walked in on a really deviant scene?• The Rector walked in on Freddie the lion and his sleeping mate.
→ walk in on somebody at walk1(PHRASAL VERB)