sponger
  使用海綿擦拭的人,海綿採集者,食客
  Spon·ger n.
  1. One who sponges, or uses a sponge.
  2. One employed in gathering sponges.
  3. Fig.: A parasitical dependent; a hanger-on.
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  sponger
       n 1: a workman employed to collect sponges
       2: a follower who hangs around a host (without benefit to the
          host) in hope of gain or advantage [syn: leech, parasite,
           sponge]