sun·less /-ləs/
  (a.)陽光照射不到的,陰暗的
  Sun·less a. Destitute or deprived of the sun or its rays; shaded; shadowed.
     The sunken glen whose sunless shrubs must weep.   --Byron.
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  sunless
       adj : filled or abounding with clouds [syn: cloud-covered, clouded,
              overcast]