smattering
  一知半解的知識
  Smat·ter·ing, n. A slight, superficial knowledge of something; sciolism.
     I had a great desire, not able to attain to a superficial skill in any, to have some smattering in all.   --Burton.
  ◄ ►
  smattering
       n 1: a small number or amount; "only a handful of responses were
            received" [syn: handful]
       2: a slight or superficial understanding of a subject