dol·drums /ˈdoldrəmz, ˈdɑl, ˈdɔl-/
 憂鬱,赤道無風帶


 dol·drums n. pl.  A part of the ocean near the equator, abounding in calms, squalls, and light, baffling winds, which sometimes prevent all progress for weeks; -- so called by sailors.
 To be in the doldrums, to be in a state of listlessness ennui, or tedium.

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 doldrums
      n 1: a state of inactivity (in business or art etc); "economic
           growth of less than 1% per year is considered to be
           economic stagnation" [syn: stagnation, stagnancy]
      2: a belt of calms and light winds between the northern and
         southern trade winds of the Atlantic and Pacific [syn: {the
         doldrums]