plod /ˈplɑd/
  沈重的步伐,辛勤工作(vi.)沈重地走,辛勤工作,孜孜從事(vt.)沈重緩慢地走
  Plod v. i. [imp. & p. p. Plodded p. pr. & vb. n. Plodding.]
  1. To travel slowly but steadily; to trudge.
  2. To toil; to drudge; especially, to study laboriously and patiently. “Plodding schoolmen.”
  Plod, v. t. To walk on slowly or heavily.
     The ploughman homeward plods his weary way.   --Gray.
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  plod
       v : walk heavily and firmly, as when weary, or through mud;
           "Mules plodded in a circle around a grindstone" [syn: slog,
            footslog, trudge, pad, tramp]
       [also: plodding, plodded]