supersmart       
adjective mainly US (also super-smart) uk/ˌsuː.pəˈsmɑːt/ us/ˌsuː.pɚˈsmɑːrt/
 超级聪明
extremely intelligent, or extremely good at thinking quickly or intelligently in difficult situations 
  My sister is super-smart; she has master's degrees in both public policy and comparative literature. 
He is a super-smart manager who always gets the best out of his players.  他是一位超级聪明的教练,总是让他的球员充分发挥。 
 - More examples
 - Knowing that she is a super-smart organiser, we let Martha plan most of the itinerary of our trip.
 - The super-smart detective could easily identify holes in the suspect's alibi.
 - Jill was not surprised to learn that her super-smart niece had got a place at Oxford University.