sel·dom /ˈsɛldəm/
  (a.)不常的,稀少的(ad.)很少,不常
  Sel·dom adv. [Usually, Compar. More seldom superl. Most seldom but sometimes also, Seldomer Seldomest.]  Rarely; not often; not frequently.
     Wisdom and youth are seldom joined in one.   --Hooker.
  Sel·dom a. Rare; infrequent. [Archaic.] “A suppressed and seldom anger.”
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  seldom
       adv : not often; "we rarely met" [syn: rarely] [ant: frequently]