think of something        
phrasal verb with think verb uk/θɪŋk/ us/θɪŋk/ thought | thought
B1 想出;发明
to produce a new idea or plan
  We'll have to think of a pretty good excuse for being late. 我们得想一个很好的迟到借口。 
 - More examples
 - Luckily, Dan thought of using the wire to pick the lock.
 - We should have thought of phoning you.
 - A ladder would have been a good idea, but we didn't think of it.
 - We tried to think of a way for him to earn money.
 - Can you think of a good reason to ask for some more money?