riddling
  過篩; 篩上物
  Rid·dle, v. t. [imp. & p. p. Riddled p. pr. & vb. n. Riddling ]
  1. To separate, as grain from the chaff, with a riddle; to pass through a riddle; as, riddle wheat; to riddle coal or gravel.
  2. To perforate so as to make like a riddle; to make many holes in; as, a house riddled with shot.
  Rid·dling a. Speaking in a riddle or riddles; containing a riddle. “Riddling triplets.”  --Tennyson. -- Rid*dling, adv.
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