sun·set /-ˌsɛt/
 日落,晚年


 Sun·set Sun·set·ting, n.
 1. The descent of the sun below the horizon; also, the time when the sun sets; evening. Also used figuratively.
    'T is the sunset of life gives me mystical lore.   --Campbell.
 2. Hence, the region where the sun sets; the west.
 Sunset shell Zool., a West Indian marine bivalve (Tellina radiata) having a smooth shell marked with radiating bands of varied colors resembling those seen at sunset or before sunrise; -- called also rising sun.

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 sunset
      adj 1: of a declining industry or technology; "sunset industries"
      2: providing for termination; "a program with a sunset
         provision" [syn: sunset(a)]
      n 1: the time in the evening at which the sun begins to fall
           below the horizon [syn: sundown] [ant: dawn]
      2: atmospheric phenomena accompanying the daily disappearance
         of the sun
      3: the daily event of the sun sinking below the horizon