re·tain /rɪˈten/
  (vt.)保持,保留;留住,擋住;記住
  re·tain /rɪˈten/ 及物動詞
  保持,保留,阻留,維持,記住
  retain
  重(新繼)續;摘要
  retain
  留存
  Re·tain v. t. [imp. & p. p. Retained p. pr. & vb. n. Retaining.]
  1. To continue to hold; to keep in possession; not to lose, part with, or dismiss; to restrain from departure, escape, or the like. “Thy shape invisible retain.”
  Be obedient, and retain
  Unalterably firm his love entire.   --Milton.
     An executor may retain a debt due to him from the testator.   --Blackstone.
  2. To keep in pay; to employ by a preliminary fee paid; to hire; to engage; as, to retain a counselor.
     A Benedictine convent has now retained the most learned father of their order to write in its defense.   --Addison.
  3. To restrain; to prevent. [Obs.]
  Retaining wall Arch. & Engin., a wall built to keep any movable backing, or a bank of sand or earth, in its place; -- called also retain wall.
  Syn: -- To keep; hold; restrain. See Keep.
  Re·tain, v. i.
  1. To belong; to pertain. [Obs.]
     A somewhat languid relish, retaining to bitterness.   --Boyle.
  2. To keep; to continue; to remain. [Obs.]
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  retain
       v 1: hold within; "This soil retains water"; "I retain this drug
            for a long time"
       2: allow to remain in a place or position; "We cannot continue
          several servants any longer"; "She retains a lawyer"; "The
          family's fortune waned and they could not keep their
          household staff"; "Our grant has run out and we cannot
          keep you on"; "We kept the work going as long as we could"
          [syn: continue, keep, keep on, keep going]
       3: secure and keep for possible future use or application; "The
          landlord retained the security deposit"; "I reserve the
          right to disagree" [syn: hold, keep back, hold back]
       4: keep in one's mind; "I cannot retain so much information"