up·side /ˈʌpˌsaɪd/
  上側,上段,上部
  Up·side n.
  1. The upper side; the part that is uppermost.
  To be upsides with, to be even with. [Prov. Eng. & Scot.] --Sir W. Scott. --T. Hughes.
  Upside down. 
     These that have turned the world upside down are come hither also.   --Acts xvii. 6.
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  upside
       n : the highest or uppermost side of anything; "put your books
           on top of the desk"; "only the top side of the box was
           painted" [syn: top, top side, upper side]