intelligent       
adjective uk/ɪnˈtel.ɪ.dʒənt/ us/ɪnˈtel.ə.dʒənt/
B1 有才智的;聪颖的,理解力强的
showing intelligence, or able to learn and understand things easily
  a highly intelligent young man 聪颖过人的年轻人 
 an intelligent remark 妙语 
 Helen had a few intelligent things to say on the subject. 对于这个主题,海伦有一些颇有见地的想法要说。 
 - More examples
 - She's obviously very intelligent, but her lectures are difficult to follow.
 - They are searching for intelligent life forms in other solar systems.
 - Some people object to streaming because it gives an unfair advantage to intelligent children.
 - These particular dinosaurs were large-brained and more intelligent than most.
 - Man is still far more intelligent than the cleverest robot.