plodder
  沈重行走的人,辛勤工作的人,努力用功的人
  Plod·der n. One who plods; a drudge.
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  plodder
       n 1: someone who walks in a laborious heavy-footed manner [syn: trudger,
             slogger]
       2: someone who works slowly and monotonously for long hours
          [syn: slogger]
       3: someone who moves slowly; "in England they call a slowpoke a
          slowcoach" [syn: slowpoke, stick-in-the-mud, slowcoach]