rea·son·able /ˈriznəbəl, ˈrizṇəbəl/
 (a.)合理的,有道理的;通情達理的,公道的


 Rea·son·a·ble, adv. Reasonably; tolerably. [Obs.]
    I have a reasonable good ear in music.   --Shak.

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 Rea·son·a·ble a.
 1. Having the faculty of reason; endued with reason; rational; as, a reasonable being.
 2. Governed by reason; being under the influence of reason; thinking, speaking or acting rationally, or according to the dictates of reason; agreeable to reason; just; rational; as, the measure must satisfy all reasonable men.
    By indubitable certainty, I mean that which doth not admit of any reasonable cause of doubting.   --Bp. Wilkins.
    Men have no right to what is not reasonable.   --Burke.
 3. Not excessive or immoderate; within due limits; proper; as, a reasonable demand, amount, price.
 Let . . . all things be thought upon
 That may, with reasonable swiftness, add
 More feathers to our wings.   --Shak.
 Syn: -- Rational; just; honest; equitable; fair; suitable; moderate; tolerable. See Rational.


 reasonable
      adj 1: showing reason or sound judgment; "a sensible choice"; "a
             sensible person" [syn: sensible] [ant: unreasonable]
      2: not excessive or extreme; "a fairish income"; "reasonable
         prices" [syn: fair, fairish]
      3: marked by sound judgment; "sane nuclear policy" [syn: sane]