资料来源 : pyDict

附属的,从犯的

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Accessorial \Ac`ces*so"ri*al\, a.
   Of or pertaining to an accessory; as, accessorial agency,
   accessorial guilt.

资料来源 : WordNet®

accessorial
     adj : something added that is nonessential but helpful;
           "accessorial services included sorting and packing"